/* ================================================
   KLEVERSON HAIR STUDIO — Prótese Capilar
   Premium Design System
   ================================================ */

/* === CSS Variables === */
:root {
    /* Colors */
    --color-bg-dark: #0a0a0f;
    --color-bg-section: #111118;
    --color-bg-card: #1a1a24;
    --color-bg-card-hover: #222230;
    --color-surface: #16161e;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-light: rgba(255, 255, 255, 0.1);

    /* Gold Accent */
    --color-gold: #c9a84c;
    --color-gold-light: #dfc06a;
    --color-gold-dark: #a88a35;
    --gradient-gold: linear-gradient(135deg, #c9a84c, #f0d78c, #c9a84c);
    --gradient-gold-text: linear-gradient(135deg, #dfc06a, #f0d78c, #c9a84c);

    /* WhatsApp Green */
    --color-whatsapp: #25D366;
    --color-whatsapp-dark: #1da851;
    --gradient-whatsapp: linear-gradient(135deg, #25D366, #128C7E);

    /* Text */
    --color-text: #f5f5f7;
    --color-text-muted: #8e8e99;
    --color-text-light: #c5c5cc;

    /* Fonts */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, sans-serif;

    /* Spacing */
    --section-padding: 120px 0;
    --container-width: 1240px;
    --border-radius: 16px;
    --border-radius-sm: 10px;

    /* Shadows */
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(201, 168, 76, 0.3);
    --shadow-glow-strong: 0 0 60px rgba(201, 168, 76, 0.4);
    --shadow-whatsapp: 0 4px 20px rgba(37, 211, 102, 0.4);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* === Reset & Base === */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-dark);
    color: var(--color-text);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: var(--section-padding);
    position: relative;
}

/* === Preloader === */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader-ring {
    width: 80px;
    height: 80px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-gold);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-text {
    position: absolute;
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-gold);
    letter-spacing: 2px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === Typography === */
.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-gold);
    margin-bottom: 16px;
    position: relative;
    padding-left: 40px;
}

.section-tag::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 28px;
    height: 2px;
    background: var(--gradient-gold);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--color-text);
}

.text-gradient {
    background: var(--gradient-gold-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
    line-height: 1.6;
}

.section-header {
    text-align: center;
    margin-bottom: 72px;
}

.section-header .section-subtitle {
    margin: 0 auto;
}

.section-header .section-tag {
    padding-left: 0;
}

.section-header .section-tag::before {
    display: none;
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-gold);
    color: #0a0a0f;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.btn-whatsapp {
    background: var(--gradient-whatsapp);
    color: #fff;
    font-weight: 700;
    padding: 16px 36px;
    font-size: 1rem;
}

.btn-whatsapp:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-whatsapp);
    filter: brightness(1.1);
}

.btn-whatsapp i {
    font-size: 1.2rem;
}

.btn-glow {
    position: relative;
    overflow: hidden;
}

.btn-glow::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.btn-glow:hover::after {
    transform: translateX(100%);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border-light);
}

.btn-outline:hover {
    border-color: var(--color-gold);
    color: var(--color-gold);
    transform: translateY(-3px);
}

.btn-outline-dark {
    background: transparent;
    color: var(--color-gold);
    border: 1.5px solid var(--color-gold);
    padding: 10px 24px;
    font-size: 0.85rem;
}

.btn-outline-dark:hover {
    background: var(--color-gold);
    color: var(--color-bg-dark);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* === Navigation === */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    backdrop-filter: blur(0px);
}

#navbar.scrolled {
    padding: 12px 0;
    background: rgba(10, 10, 15, 0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.5px;
}

.logo-k {
    font-size: 2rem;
    background: var(--gradient-gold-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-dot {
    color: var(--color-gold);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-text-muted);
    padding: 8px 16px;
    border-radius: 50px;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--color-gold);
    border-radius: 50%;
}

.nav-cta {
    background: var(--gradient-whatsapp);
    color: #fff !important;
    font-weight: 600;
    padding: 10px 24px;
    margin-left: 8px;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-whatsapp);
}

.nav-cta::after {
    display: none;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 28px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translateY(5.5px) translateX(5.5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-5.5px) translateX(5.5px);
}

/* === Hero Section === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: url('images/hero_bg.png') center/cover no-repeat;
    padding: 140px 0 100px;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(10, 10, 15, 0.7) 0%,
        rgba(10, 10, 15, 0.85) 50%,
        rgba(10, 10, 15, 0.95) 100%
    );
    z-index: 1;
}

.hero-particles {
    position: absolute;
    inset: 0;
    z-index: 2;
    pointer-events: none;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 24px;
    background: rgba(201, 168, 76, 0.1);
    border: 1px solid rgba(201, 168, 76, 0.3);
    border-radius: 50px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-gold);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 32px;
}

.hero-badge i {
    font-size: 1rem;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 28px;
    color: var(--color-text);
}

.hero-highlight {
    background: var(--gradient-gold-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub-heading {
    display: block;
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    font-weight: 400;
    color: var(--color-text-muted);
    font-family: var(--font-body);
    margin-top: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    -webkit-text-fill-color: var(--color-text-muted);
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 580px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 72px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--color-gold);
    line-height: 1;
}

.stat-suffix {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--color-gold);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-top: 8px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: var(--color-border-light);
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    text-align: center;
}

.hero-scroll span {
    display: block;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-border-light);
    border-radius: 12px;
    margin: 0 auto;
    position: relative;
}

.scroll-indicator::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-gold);
    border-radius: 4px;
    animation: scrollDown 1.8s ease-in-out infinite;
}

@keyframes scrollDown {
    0% { transform: translate(-50%, 0); opacity: 1; }
    100% { transform: translate(-50%, 14px); opacity: 0; }
}

/* === About Section === */
.about {
    background: var(--color-bg-section);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image-frame {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 4/5;
    border: 2px solid rgba(201, 168, 76, 0.25);
    box-shadow: 
        0 0 0 6px rgba(201, 168, 76, 0.06),
        0 20px 60px rgba(0, 0, 0, 0.5),
        0 0 80px rgba(201, 168, 76, 0.08);
    transition: var(--transition);
}

.about-image-frame:hover {
    border-color: rgba(201, 168, 76, 0.4);
    box-shadow: 
        0 0 0 6px rgba(201, 168, 76, 0.1),
        0 24px 72px rgba(0, 0, 0, 0.6),
        0 0 100px rgba(201, 168, 76, 0.12);
    transform: translateY(-4px);
}

.about-image-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 15%;
    transition: var(--transition-slow);
    filter: brightness(1.02) contrast(1.04);
}

.about-image-frame:hover img {
    transform: scale(1.03);
    filter: brightness(1.05) contrast(1.06);
}

/* Gradient overlay on bottom for premium look */
.about-image-frame::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40%;
    background: linear-gradient(
        0deg,
        rgba(10, 10, 15, 0.5) 0%,
        rgba(10, 10, 15, 0) 100%
    );
    pointer-events: none;
    z-index: 1;
}

.about-image-accent {
    position: absolute;
    bottom: -16px;
    right: -16px;
    width: 140px;
    height: 140px;
    border: 3px solid var(--color-gold);
    border-radius: var(--border-radius);
    z-index: -1;
    opacity: 0.5;
}

/* Gold corner accent top-left */
.about-image::before {
    content: '';
    position: absolute;
    top: -16px;
    left: -16px;
    width: 80px;
    height: 80px;
    border-top: 3px solid var(--color-gold);
    border-left: 3px solid var(--color-gold);
    border-radius: var(--border-radius) 0 0 0;
    z-index: 3;
    opacity: 0.4;
}

.about-experience-badge {
    position: absolute;
    bottom: -24px;
    right: -24px;
    background: var(--gradient-gold);
    padding: 20px 28px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow-glow);
    z-index: 2;
}

.badge-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-bg-dark);
    line-height: 1;
}

.badge-text {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-bg-dark);
    margin-top: 4px;
}

.about-text {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    margin-top: 36px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 16px;
    border-radius: var(--border-radius-sm);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.feature-item:hover {
    border-color: rgba(201, 168, 76, 0.3);
    transform: translateX(8px);
}

.feature-icon {
    min-width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 76, 0.1);
    border-radius: 12px;
    color: var(--color-gold);
    font-size: 1.2rem;
}

.feature-item h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.feature-item p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.about-cta {
    margin-top: 36px;
}

/* === Prótese Capilar Section === */
.protese-section {
    background: var(--color-bg-dark);
}

.protese-content-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 48px;
    align-items: start;
    margin-bottom: 64px;
}

.protese-text-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 48px 40px;
    position: relative;
    overflow: hidden;
}

.protese-text-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-gold);
}

.protese-icon-large {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 76, 0.1);
    border-radius: 18px;
    color: var(--color-gold);
    font-size: 1.8rem;
    margin-bottom: 28px;
}

.protese-text-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-text);
}

.protese-text-card p {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.protese-text-card .btn-outline-dark {
    margin-top: 8px;
}

.protese-benefits {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.benefit-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 24px 20px;
    transition: var(--transition);
    text-align: center;
}

.benefit-card:hover {
    transform: translateY(-4px);
    border-color: rgba(201, 168, 76, 0.3);
    box-shadow: var(--shadow-card);
}

.benefit-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 76, 0.1);
    border-radius: 14px;
    color: var(--color-gold);
    font-size: 1.3rem;
    margin: 0 auto 16px;
    transition: var(--transition);
}

.benefit-card:hover .benefit-icon {
    background: var(--color-gold);
    color: var(--color-bg-dark);
    transform: scale(1.1);
}

.benefit-card h4 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.benefit-card p {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

/* CTA Banner */
.protese-cta-banner {
    background: linear-gradient(135deg, rgba(201, 168, 76, 0.08) 0%, rgba(37, 211, 102, 0.08) 100%);
    border: 1px solid rgba(201, 168, 76, 0.2);
    border-radius: var(--border-radius);
    padding: 48px;
}

.cta-banner-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
}

.cta-banner-text h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.cta-banner-text p {
    font-size: 0.95rem;
    color: var(--color-text-muted);
}

/* === Diferenciais Section === */
.diferenciais-section {
    background: var(--color-bg-section);
}

.diferenciais-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.diferencial-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 36px 28px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.diferencial-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-gold);
    transform: scaleX(0);
    transition: var(--transition);
}

.diferencial-card:hover {
    transform: translateY(-8px);
    border-color: rgba(201, 168, 76, 0.2);
    box-shadow: var(--shadow-card);
}

.diferencial-card:hover::before {
    transform: scaleX(1);
}

.diferencial-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-gold-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
    line-height: 1;
    opacity: 0.6;
}

.diferencial-card h4 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.diferencial-card p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* === Gallery Section === */
.galeria-section {
    background: var(--color-bg-dark);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 48px;
}

.gallery-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.gallery-item:hover img {
    transform: scale(1.08);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(10, 10, 15, 0.9) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 24px;
    opacity: 0;
    transition: var(--transition);
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-name {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.gallery-procedure {
    font-size: 0.8rem;
    color: var(--color-gold);
    font-weight: 500;
}

/* Gallery Placeholder */
.gallery-placeholder {
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-surface) 100%);
    border: 2px dashed var(--color-border-light);
}

.placeholder-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--color-text-muted);
    z-index: 1;
}

.placeholder-content i {
    font-size: 2.5rem;
    color: rgba(201, 168, 76, 0.3);
}

.placeholder-content span {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-muted);
}

.placeholder-content small {
    font-size: 0.75rem;
    color: rgba(142, 142, 153, 0.6);
}

.gallery-cta {
    text-align: center;
}

/* === Videos Section === */
.videos-section {
    background: var(--color-bg-section);
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.video-item {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    aspect-ratio: 16/9;
    cursor: pointer;
    transition: var(--transition);
}

.video-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.video-item iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Video Placeholder */
.video-placeholder {
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-surface) 100%);
    border: 2px dashed var(--color-border-light);
}

.video-placeholder-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--color-text-muted);
}

.play-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 76, 0.15);
    border: 2px solid rgba(201, 168, 76, 0.3);
    border-radius: 50%;
    color: var(--color-gold);
    font-size: 1.5rem;
    transition: var(--transition);
}

.video-item:hover .play-icon {
    background: var(--color-gold);
    color: var(--color-bg-dark);
    transform: scale(1.1);
}

.video-placeholder-content span {
    font-size: 0.9rem;
    font-weight: 600;
}

.video-placeholder-content small {
    font-size: 0.78rem;
    color: rgba(142, 142, 153, 0.6);
}

/* === Testimonials Section === */
.testimonials {
    background: var(--color-bg-dark);
}

.testimonials-slider {
    position: relative;
    overflow: hidden;
}

.testimonials-track {
    display: flex;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.testimonial-card {
    min-width: 100%;
    padding: 0 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.testimonial-stars {
    display: flex;
    gap: 4px;
    margin-bottom: 28px;
}

.testimonial-stars i {
    color: var(--color-gold);
    font-size: 1.1rem;
}

.testimonial-text {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-style: italic;
    font-weight: 400;
    color: var(--color-text-light);
    line-height: 1.8;
    max-width: 720px;
    margin-bottom: 36px;
    position: relative;
}

.testimonial-text::before {
    content: '"';
    position: absolute;
    top: -20px;
    left: -20px;
    font-size: 5rem;
    color: rgba(201, 168, 76, 0.15);
    font-family: var(--font-heading);
    line-height: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.testimonial-avatar-initials {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(201, 168, 76, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-gold);
    border: 2px solid var(--color-gold);
}

.testimonial-author strong {
    display: block;
    font-size: 1rem;
    color: var(--color-text);
}

.testimonial-author span {
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

.slider-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-top: 48px;
}

.slider-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 50%;
    color: var(--color-text);
    cursor: pointer;
    transition: var(--transition);
}

.slider-btn:hover {
    background: var(--color-gold);
    color: var(--color-bg-dark);
    border-color: var(--color-gold);
}

.slider-dots {
    display: flex;
    gap: 8px;
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-border-light);
    cursor: pointer;
    transition: var(--transition);
}

.slider-dot.active {
    background: var(--color-gold);
    width: 28px;
    border-radius: 5px;
}

/* === Process Section === */
.process {
    background: var(--color-bg-section);
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
    margin-bottom: 56px;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 36px;
    left: 60px;
    right: 60px;
    height: 2px;
    background: var(--color-border);
}

.process-step {
    position: relative;
    text-align: center;
}

.process-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-gold);
    margin-bottom: 24px;
    position: relative;
    z-index: 2;
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-section);
    border: 2px solid var(--color-gold);
    border-radius: 50%;
    margin: 0 auto 24px;
    transition: var(--transition);
}

.process-step:hover .process-number {
    background: var(--color-gold);
    color: var(--color-bg-dark);
    box-shadow: var(--shadow-glow);
}

.process-content h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--color-text);
}

.process-content p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.process-cta {
    text-align: center;
}

/* === FAQ Section === */
.faq-section {
    background: var(--color-bg-dark);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    margin-bottom: 12px;
    overflow: hidden;
    background: var(--color-bg-card);
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(201, 168, 76, 0.2);
}

.faq-item.active {
    border-color: rgba(201, 168, 76, 0.4);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: none;
    border: none;
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--color-gold);
}

.faq-icon {
    font-size: 0.8rem;
    color: var(--color-gold);
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-answer p {
    padding: 0 24px 20px;
    font-size: 0.92rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.faq-cta {
    text-align: center;
    margin-top: 56px;
}

.faq-cta p {
    color: var(--color-text-muted);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

/* === Contact Section === */
.contact {
    background: var(--color-bg-section);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
}

.contact-info p {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    margin-bottom: 40px;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 36px;
}

.contact-item {
    display: flex;
    gap: 16px;
    align-items: center;
    padding: 16px;
    background: var(--color-bg-card);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.contact-item:hover {
    border-color: rgba(201, 168, 76, 0.3);
    transform: translateX(8px);
}

.contact-icon {
    min-width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(201, 168, 76, 0.1);
    border-radius: 12px;
    color: var(--color-gold);
    font-size: 1.2rem;
}

.contact-item strong {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text);
    margin-bottom: 2px;
}

.contact-item p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin: 0;
}

/* WhatsApp Big Button */
.btn-whatsapp-big {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
    padding: 20px 28px;
    background: var(--gradient-whatsapp);
    border-radius: var(--border-radius-sm);
    color: #fff;
    font-family: var(--font-body);
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.btn-whatsapp-big i {
    font-size: 2rem;
}

.btn-whatsapp-big:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(37, 211, 102, 0.4);
}

.whatsapp-big-text {
    text-align: left;
}

.whatsapp-big-text strong {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
}

.whatsapp-big-text span {
    font-size: 0.82rem;
    opacity: 0.85;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 48px 40px;
    position: relative;
    overflow: hidden;
}

.contact-form-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-whatsapp);
}

.contact-form h3 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--color-text);
}

.contact-form > p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 32px;
}

.form-group {
    position: relative;
    margin-bottom: 20px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 16px 16px 16px 48px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 0.92rem;
    transition: var(--transition);
    outline: none;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-group select {
    appearance: none;
    cursor: pointer;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-whatsapp);
    box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.1);
}

.form-group label {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
    font-size: 1rem;
}

.form-group textarea ~ label {
    top: 18px;
    transform: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group select option {
    background: var(--color-bg-card);
    color: var(--color-text);
}

/* === Footer === */
.footer {
    background: var(--color-bg-dark);
    padding: 80px 0 32px;
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 48px;
    margin-bottom: 56px;
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-top: 16px;
    line-height: 1.6;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.footer-social a {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-muted);
    transition: var(--transition);
    font-size: 1rem;
}

.footer-social a:hover {
    background: var(--color-gold);
    border-color: var(--color-gold);
    color: var(--color-bg-dark);
    transform: translateY(-3px);
}

.footer-links h4,
.footer-cta-block h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 20px;
}

.footer-links a {
    display: block;
    font-size: 0.88rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-gold);
    padding-left: 8px;
}

.footer-cta-block p {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    margin-bottom: 20px;
    line-height: 1.6;
}

.footer-cta-block .btn-whatsapp {
    font-size: 0.85rem;
    padding: 12px 24px;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.82rem;
    color: var(--color-text-muted);
}

/* === WhatsApp Float === */
.whatsapp-float {
    position: fixed;
    bottom: 28px;
    right: 28px;
    width: 64px;
    height: 64px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2rem;
    z-index: 999;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
}

.whatsapp-float:hover {
    transform: scale(1.12);
    box-shadow: 0 8px 32px rgba(37, 211, 102, 0.5);
}

.whatsapp-pulse {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    border: 2px solid rgba(37, 211, 102, 0.6);
    animation: whatsappPulse 2s ease-out infinite;
}

@keyframes whatsappPulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

.whatsapp-tooltip {
    position: absolute;
    right: 76px;
    top: 50%;
    transform: translateY(-50%);
    background: #fff;
    color: #333;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    white-space: nowrap;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.whatsapp-tooltip::after {
    content: '';
    position: absolute;
    right: -6px;
    top: 50%;
    transform: translateY(-50%);
    border-left: 6px solid #fff;
    border-top: 6px solid transparent;
    border-bottom: 6px solid transparent;
}

.whatsapp-float:hover .whatsapp-tooltip {
    opacity: 1;
    visibility: visible;
}

/* === Mobile Sticky CTA === */
.mobile-sticky-cta {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 998;
    padding: 12px 16px;
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--color-border);
}

.mobile-sticky-cta a {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 16px;
    background: var(--gradient-whatsapp);
    color: #fff;
    font-weight: 700;
    font-size: 1rem;
    border-radius: var(--border-radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.mobile-sticky-cta a i {
    font-size: 1.3rem;
}

/* === Back to Top === */
.back-to-top {
    position: fixed;
    bottom: 28px;
    left: 28px;
    width: 48px;
    height: 48px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 998;
    font-size: 0.9rem;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-gold);
    color: var(--color-bg-dark);
    border-color: var(--color-gold);
}

/* === Lightbox === */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    cursor: pointer;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox img {
    max-width: 90%;
    max-height: 90vh;
    border-radius: var(--border-radius);
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: 50%;
    color: var(--color-text);
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
    z-index: 2;
}

.lightbox-close:hover {
    background: var(--color-gold);
    color: var(--color-bg-dark);
}

/* === Animation Classes === */
[data-animate] {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-animate="fade-right"] {
    transform: translateX(-40px);
}

[data-animate="fade-left"] {
    transform: translateX(40px);
}

[data-animate].animated {
    opacity: 1;
    transform: translate(0, 0);
}

/* === RESPONSIVE === */

/* Tablet */
@media (max-width: 1024px) {
    :root {
        --section-padding: 80px 0;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .about-image {
        max-width: 400px;
        margin: 0 auto;
    }

    .protese-content-grid {
        grid-template-columns: 1fr;
    }

    .protese-benefits {
        grid-template-columns: repeat(3, 1fr);
    }

    .diferenciais-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .videos-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-timeline {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .process-timeline::before {
        display: none;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .cta-banner-content {
        flex-direction: column;
        text-align: center;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --section-padding: 64px 0;
    }

    /* Nav */
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 360px;
        height: 100vh;
        background: rgba(10, 10, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 32px;
        gap: 4px;
        transition: var(--transition);
        border-left: 1px solid var(--color-border);
    }

    .nav-links.open {
        right: 0;
    }

    .nav-link {
        font-size: 1.1rem;
        padding: 12px 16px;
        width: 100%;
    }

    .nav-cta {
        margin-left: 0;
        margin-top: 16px;
        text-align: center;
        width: 100%;
        justify-content: center;
    }

    .hamburger {
        display: flex;
    }

    /* Hero */
    .hero {
        padding: 120px 0 80px;
    }

    .hero h1 {
        font-size: clamp(2.2rem, 8vw, 3.5rem);
    }

    .hero-stats {
        gap: 28px;
    }

    .stat-number, .stat-suffix {
        font-size: 2rem;
    }

    .stat-divider {
        height: 32px;
    }

    .hero-scroll {
        display: none;
    }

    /* Protese */
    .protese-benefits {
        grid-template-columns: repeat(2, 1fr);
    }

    .protese-text-card {
        padding: 32px 24px;
    }

    .protese-cta-banner {
        padding: 32px 24px;
    }

    /* Diferenciais */
    .diferenciais-grid {
        grid-template-columns: 1fr;
    }

    /* Gallery */
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    /* Videos */
    .videos-grid {
        grid-template-columns: 1fr;
    }

    /* Testimonials */
    .testimonial-card {
        padding: 0 16px;
    }

    .testimonial-text {
        font-size: 1.05rem;
    }

    /* Process */
    .process-timeline {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    /* Form */
    .contact-form-wrapper {
        padding: 32px 24px;
    }

    /* WhatsApp */
    .whatsapp-float {
        width: 56px;
        height: 56px;
        font-size: 1.6rem;
        bottom: 80px;
        right: 20px;
    }

    .whatsapp-tooltip {
        display: none;
    }

    /* Mobile sticky CTA */
    .mobile-sticky-cta {
        display: block;
    }

    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 80px;
        left: 20px;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        justify-content: center;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .about-experience-badge {
        bottom: -12px;
        right: -8px;
        padding: 14px 20px;
    }

    .badge-number {
        font-size: 1.8rem;
    }

    .protese-benefits {
        grid-template-columns: 1fr;
    }
}