/* ==========================================================================
   21 Trans-Dermal - Ana Stil Dosyası
   Author: 21 Trans-Dermal Türkiye
   Version: 1.0.0
   ========================================================================== */

/* ==========================================================================
   CSS Değişkenleri ve Reset
   ========================================================================== */
:root {
    --primary-yellow: #ffe701;
    --primary-yellow-dark: #e6d000;
    --primary-yellow-light: #fff9cc;
    --primary-black: #000000;
    --primary-black-light: #1a1a1a;
    --light-gray: #f8f8f8;
    --medium-gray: #eaeaea;
    --dark-gray: #333333;
    --text-dark: #222222;
    --text-medium: #444444;
    --text-light: #555555;
    --text-lighter: #777777;
    --white: #ffffff;
    --off-white: #fafafa;
    --shadow-light: rgba(0, 0, 0, 0.08);
    --shadow-medium: rgba(0, 0, 0, 0.12);
    --shadow-dark: rgba(0, 0, 0, 0.2);
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 10px;
    --border-radius-xl: 16px;
    --container-width: 1200px;
    --container-padding: 20px;
    --header-height: 80px;
    --mobile-breakpoint: 768px;
    --tablet-breakpoint: 992px;
    --desktop-breakpoint: 1200px;
}

/* ==========================================================================
   CSS Reset ve Temel Stiller
   ========================================================================== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
        font-family: 'Urbanist', system-ui, -apple-system, BlinkMacSystemFont,
                 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Erişilebilirlik ve Utility Sınıfları
   ========================================================================== */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-to-content {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-yellow);
    color: var(--primary-black);
    padding: 8px 16px;
    text-decoration: none;
    z-index: 9999;
    transition: top var(--transition-medium);
}

.skip-to-content:focus {
    top: 0;
}

/* ==========================================================================
   Tipografi
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--primary-black);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.2rem, 2.5vw, 1.5rem);
}

p {
    margin-bottom: 1.25rem;
    font-size: 1rem;
    line-height: 1.7;
}

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

ul, ol {

    padding-left: 1.5rem;
}

li {
    margin-bottom: 0.5rem;
}

/* ==========================================================================
   Layout ve Container
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: clamp(60px, 8vw, 100px) 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: clamp(40px, 6vw, 60px);
    position: relative;
}

.section-title h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    color: var(--primary-black);
    display: inline-block;
    padding-bottom: 15px;
    position: relative;
}

.section-title h2::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 4px;
    background-color: var(--primary-yellow);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
}

.section-subtitle {
    text-align: center;
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto clamp(30px, 4vw, 50px);
    line-height: 1.6;
}

/* ==========================================================================
   Butonlar
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: var(--primary-yellow);
    color: var(--primary-black);
    padding: 14px 35px;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    font-weight: 600;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-medium);
    text-align: center;
    font-size: 1rem;
    line-height: 1.5;
    min-height: 48px;
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
    z-index: -1;
}

.btn:hover {
    background-color: var(--primary-yellow-dark);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--shadow-medium);
}

.btn:hover::before {
    left: 100%;
}

.btn:active {
    transform: translateY(-1px);
}

.btn:focus {
    outline: 2px solid var(--primary-yellow);
    outline-offset: 2px;
}

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

.btn-outline:hover {
    background-color: var(--primary-black);
    color: var(--white);
    border-color: var(--primary-black);
}

.btn-secondary {
    background-color: var(--primary-black);
    color: var(--white);
    border: 2px solid var(--primary-black);
}

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-black);
}

.btn-sm {
    padding: 10px 24px;
    font-size: 0.9rem;
    min-height: 40px;
}

.btn-lg {
    padding: 18px 45px;
    font-size: 1.1rem;
    min-height: 56px;
}

.btn-full {
    width: 100%;
}

.btn-group {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* ==========================================================================
   Header ve Navigasyon
   ========================================================================== */
.top-bar {
    background-color: var(--primary-black);
    color: var(--white);
    padding: 10px 0;
    font-size: 0.9rem;
    position: relative;
    z-index: 1002;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.contact-info {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.contact-info a {
    color: var(--primary-yellow);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color var(--transition-fast);
}

.contact-info a:hover {
    color: var(--white);
    text-decoration: underline;
}

.contact-info i {
    font-size: 0.9rem;
}

/* Ana Header */
.main-header {
    background-color: var(--white);
    box-shadow: 0 3px 15px var(--shadow-light);
    position: sticky;
    top: 0;
    z-index: 1001;
    transition: all var(--transition-medium);
    height: var(--header-height);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo-icon {
    color: var(--primary-yellow);
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1;
}

.logo h1 {
    font-size: 1.9rem;
    color: var(--primary-black);
    margin-bottom: 0;
    line-height: 1;
}

.logo-highlight {
    color: var(--primary-yellow);
}

/* Ana Navigasyon */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: 35px;
}

.main-nav li {
    position: relative;
}

.main-nav a {
    color: var(--primary-black);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.05rem;
    padding: 8px 0;
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
}

.main-nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 3px;
    background-color: var(--primary-yellow);
    bottom: 0;
    left: 0;
    transition: width var(--transition-medium);
    border-radius: 2px;
}

.main-nav a:hover::after,
.main-nav a.active::after {
    width: 100%;
}

.main-nav a:hover {
    color: var(--primary-yellow);
}

.main-nav a.active {
    color: var(--primary-yellow);
}

/* Mobil Menü Butonu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.6rem;
    color: var(--primary-black);
    cursor: pointer;
    padding: 8px;
    transition: color var(--transition-fast);
    border-radius: var(--border-radius-sm);
}

.mobile-menu-btn:hover {
    color: var(--primary-yellow);
    background-color: var(--light-gray);
}

.mobile-menu-btn:focus {
    outline: 2px solid var(--primary-yellow);
    outline-offset: 2px;
}

/* ==========================================================================
   Hero Bölümü
   ========================================================================== */
.hero {
    background:url("../images/21-td-banner.webp");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    text-align: center;
    padding: clamp(100px, 15vw, 160px) 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: 25px;
    line-height: 1.2;
    font-weight: 800;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.3rem);
    margin-bottom: 40px;
    opacity: 0.95;
    line-height: 1.7;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.hero .btn {
    background-color: var(--primary-yellow);
    color: var(--primary-black);
    padding: 16px 40px;
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    min-width: 180px;
}

.hero .btn-outline {
    background-color: transparent;
    color: var(--dark-gray);
    border: 2px solid #ffe701;
}

.hero .btn-outline:hover {
    background-color: var(--white);
    color: var(--primary-black);
}

/* ==========================================================================
   Yenilikçi Formülasyon Teknolojisi
   ========================================================================== */
.innovation {
    background-color: var(--white);
}

.innovation-content {
    display: flex;
    align-items: center;
    gap: clamp(40px, 5vw, 80px);
}

.innovation-image {
    flex: 1;
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
}

.innovation-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 15px 40px var(--shadow-medium);
    transition: transform var(--transition-slow);
}

.innovation-image:hover img {
    transform: scale(1.03);
}

.innovation-text {
    flex: 1;
}

.innovation-text h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 25px;
    color: var(--primary-black);
    line-height: 1.3;
}

.innovation-text p {
    margin-bottom: 25px;
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.7;
}

.innovation-list {
    margin: 30px 0;
    padding-left: 0;
    list-style: none;
}

.innovation-list li {
    margin-bottom: 15px;
    color: var(--text-light);
    position: relative;
    padding-left: 35px;
    font-size: 1.05rem;
    line-height: 1.6;
}

.innovation-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-yellow);
    font-weight: bold;
    font-size: 1.3rem;
    top: 0;
}

/* ==========================================================================
   ReNew 21 Bölümü
   ========================================================================== */
.renew-section {
    background-color: var(--light-gray);
}

.renew-content {
    display: flex;
    align-items: center;
    gap: clamp(40px, 5vw, 80px);
}

.renew-text {
    flex: 1;
}

.renew-text h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 25px;
    color: var(--primary-black);
}

.renew-text p {
    margin-bottom: 25px;
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.7;
}

.renew-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.renew-feature {
    background-color: var(--white);
    padding: 25px 20px;
    border-radius: var(--border-radius-md);
    box-shadow: 0 5px 20px var(--shadow-light);
    transition: transform var(--transition-medium), 
                box-shadow var(--transition-medium);
    border-top: 4px solid var(--primary-yellow);
}

.renew-feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-medium);
}

.renew-feature h4 {
    color: var(--primary-black);
    margin-bottom: 12px;
    font-size: 1.2rem;
}

.renew-feature p {
    font-size: 0.95rem;
    margin-bottom: 0;
    color: var(--text-light);
}

.renew-image {
    flex: 1;
    position: relative;
}

.renew-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 15px 40px var(--shadow-medium);
}

/* ==========================================================================
   Özel Aktif Bileşenler
   ========================================================================== */
.active-ingredients {
    background-color: var(--white);
}

.ingredients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.ingredient-card {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow-light);
    transition: transform var(--transition-medium), 
                box-shadow var(--transition-medium);
    border: 1px solid var(--medium-gray);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.ingredient-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--shadow-medium);
}

.ingredient-header {
    padding: 25px 25px 15px;
    background-color: var(--light-gray);
    border-bottom: 1px solid var(--medium-gray);
}

.ingredient-header h3 {
    font-size: 1.4rem;
    color: var(--primary-black);
    margin-bottom: 10px;
}

.ingredient-tag {
    display: inline-block;
    background-color: var(--primary-yellow);
    color: var(--primary-black);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.ingredient-body {
    padding: 20px 25px 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.ingredient-body p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.ingredient-benefits {
    margin-top: 15px;
}

.ingredient-benefits h4 {
    font-size: 1rem;
    color: var(--primary-black);
    margin-bottom: 10px;
    font-weight: 600;
}

.ingredient-benefits ul {
    padding-left: 20px;
    margin-bottom: 0;
}

.ingredient-benefits li {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 8px;
    line-height: 1.5;
}

/* ==========================================================================
   Bambu Bölümü
   ========================================================================== */
.bamboo-section {
    background-color: var(--light-gray);
}

.bamboo-content {
    display: flex;
    align-items: center;
    gap: clamp(40px, 5vw, 80px);
}

.bamboo-text {
    flex: 1;
}

.bamboo-text h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 25px;
    color: var(--primary-black);
}

.bamboo-text p {
    margin-bottom: 25px;
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.7;
}

.bamboo-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.bamboo-stat {
    text-align: center;
    padding: 25px 20px;
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    box-shadow: 0 5px 20px var(--shadow-light);
    transition: transform var(--transition-medium);
}

.bamboo-stat:hover {
    transform: translateY(-5px);
}

.bamboo-stat .stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-yellow);
    margin-bottom: 10px;
    line-height: 1;
}

.bamboo-stat p {
    font-size: 0.95rem;
    margin-bottom: 0;
    color: var(--text-light);
}

.bamboo-image {
    flex: 1;
}

.bamboo-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 15px 40px var(--shadow-medium);
}

/* ==========================================================================
   Acai Bölümü
   ========================================================================== */
.acai-section {
    background-color: var(--white);
}

.acai-content {
    display: flex;
    align-items: center;
    gap: clamp(40px, 5vw, 80px);
}

.acai-image {
    flex: 1;
}

.acai-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 15px 40px var(--shadow-medium);
}

.acai-text {
    flex: 1;
}

.acai-text h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 25px;
    color: var(--primary-black);
}

.acai-text p {
    margin-bottom: 25px;
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.7;
}

.acai-benefits {
    margin: 30px 0;
}

.acai-benefit {
    display: flex;
    align-items: flex-start;
    margin-bottom: 25px;
    gap: 15px;
}

.acai-benefit i {
    color: var(--primary-yellow);
    font-size: 1.4rem;
    margin-top: 3px;
    flex-shrink: 0;
}

.acai-benefit h4 {
    font-size: 1.2rem;
    color: var(--primary-black);
    margin-bottom: 8px;
}

.acai-benefit p {
    font-size: 0.95rem;
    margin-bottom: 0;
    color: var(--text-light);
}

/* ==========================================================================
   Pentavitin Bölümü
   ========================================================================== */
.pentavitin-section {
    background-color: var(--light-gray);
}

.pentavitin-content {
    display: flex;
    align-items: center;
    gap: clamp(40px, 5vw, 80px);
}

.pentavitin-text {
    flex: 1;
}

.pentavitin-text h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 25px;
    color: var(--primary-black);
}

.pentavitin-text p {
    margin-bottom: 25px;
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.7;
}

.pentavitin-comparison {
    background-color: var(--white);
    padding: 30px;
    border-radius: var(--border-radius-lg);
    margin: 30px 0;
    box-shadow: 0 10px 30px var(--shadow-light);
    border: 1px solid var(--medium-gray);
}

.pentavitin-comparison h4 {
    font-size: 1.3rem;
    color: var(--primary-black);
    margin-bottom: 25px;
    text-align: center;
    font-weight: 600;
}

.comparison-items {
    display: flex;
    justify-content: space-between;
    gap: 30px;
}

.comparison-item {
    flex: 1;
    text-align: center;
    padding: 20px;
}

.comparison-item.pentavitin {
    border-right: 2px solid var(--medium-gray);
}

.comparison-item h5 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--primary-black);
    font-weight: 600;
}

.comparison-item p {
    font-size: 0.95rem;
    margin-bottom: 0;
    color: var(--text-light);
}

.pentavitin-image {
    flex: 1;
}

.pentavitin-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 15px 40px var(--shadow-medium);
}

/* ==========================================================================
   Venuceane Bölümü
   ========================================================================== */
.venuceane-section {
    background-color: var(--white);
}

.venuceane-content {
    display: flex;
    align-items: center;
    gap: clamp(40px, 5vw, 80px);
}

.venuceane-image {
    flex: 1;
}

.venuceane-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 15px 40px var(--shadow-medium);
}

.venuceane-text {
    flex: 1;
}

.venuceane-text h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 25px;
    color: var(--primary-black);
}

.venuceane-text p {
    margin-bottom: 25px;
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.7;
}

.protection-types {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.protection-type {
    background-color: var(--light-gray);
    padding: 25px 20px;
    border-radius: var(--border-radius-md);
    border-left: 5px solid var(--primary-yellow);
    transition: transform var(--transition-medium);
}

.protection-type:hover {
    transform: translateY(-5px);
    background-color: var(--white);
    box-shadow: 0 10px 25px var(--shadow-light);
}

.protection-type h4 {
    font-size: 1.2rem;
    color: var(--primary-black);
    margin-bottom: 12px;
    font-weight: 600;
}

.protection-type p {
    font-size: 0.95rem;
    margin-bottom: 0;
    color: var(--text-light);
}

/* ==========================================================================
   Sürdürülebilirlik Bölümü
   ========================================================================== */
.sustainability {
    background-color: var(--light-gray);
}

.sustainability-content {
    display: flex;
    align-items: center;
    gap: clamp(40px, 5vw, 80px);
}

.sustainability-text {
    flex: 1;
}

.sustainability-text h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 25px;
    color: var(--primary-black);
}

.sustainability-text p {
    margin-bottom: 25px;
    color: var(--text-light);
    font-size: 1.05rem;
    line-height: 1.7;
}

.sustainability-principles {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin: 30px 0;
}

.principle {
    display: flex;
    align-items: flex-start;
    gap: 15px;
}

.principle i {
    color: var(--primary-yellow);
    font-size: 1.6rem;
    margin-top: 3px;
    flex-shrink: 0;
}

.principle h4 {
    font-size: 1.1rem;
    color: var(--primary-black);
    margin-bottom: 8px;
    font-weight: 600;
}

.principle p {
    font-size: 0.95rem;
    margin-bottom: 0;
    color: var(--text-light);
}

.sustainability-image {
    flex: 1;
}

.sustainability-image img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 15px 40px var(--shadow-medium);
}

/* ==========================================================================
   Tedavi Konseptleri Bölümü
   ========================================================================== */
.treatments {
    background-color: var(--white);
}

.treatments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.treatment-card {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow-light);
    transition: transform var(--transition-medium), 
                box-shadow var(--transition-medium);
    border: 1px solid var(--medium-gray);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.treatment-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--shadow-medium);
}

.treatment-header {
    padding: 25px 25px 20px;
    background-color: var(--light-gray);
    border-bottom: 1px solid var(--medium-gray);
}

.treatment-header h3 {
    font-size: 1.5rem;
    color: var(--primary-black);
    margin-bottom: 15px;
}

.treatment-duration {
    display: inline-block;
    background-color: var(--primary-yellow);
    color: var(--primary-black);
    padding: 6px 18px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.treatment-body {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.treatment-body > p {
    margin-bottom: 25px;
    color: var(--text-light);
    flex-grow: 1;
}

.treatment-features {
    margin-bottom: 30px;
}

.treatment-feature {
    display: flex;
    align-items: flex-start;
    margin-bottom: 15px;
    gap: 12px;
}

.treatment-feature i {
    color: var(--primary-yellow);
    margin-top: 2px;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.treatment-feature p {
    margin-bottom: 0;
    font-size: 0.95rem;
    color: var(--text-light);
}

.treatment-body .btn {
    margin-top: auto;
    width: 100%;
}

/* ==========================================================================
   Malzeme Kalitesi Bölümü
   ========================================================================== */
.quality {
    background-color: var(--light-gray);
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.quality-card {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 35px 25px;
    text-align: center;
    box-shadow: 0 10px 30px var(--shadow-light);
    transition: transform var(--transition-medium), 
                box-shadow var(--transition-medium);
    border: 1px solid var(--medium-gray);
    height: 100%;
}

.quality-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px var(--shadow-medium);
}

.quality-icon {
    font-size: 2.8rem;
    color: var(--primary-yellow);
    margin-bottom: 25px;
}

.quality-card h3 {
    font-size: 1.3rem;
    color: var(--primary-black);
    margin-bottom: 15px;
}

.quality-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* ==========================================================================
   CTA Bölümü
   ========================================================================== */
.cta-section {
    background: linear-gradient(rgba(0, 0, 0, 0.85), rgba(0, 0, 0, 0.8)),
                url('https://images.unsplash.com/photo-1522335789203-aabd1fc54bc9?ixlib=rb-4.0.3&auto=format&fit=crop&w=2087&q=80');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--white);
    text-align: center;
    padding: clamp(80px, 12vw, 120px) 0;
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
                rgba(255, 231, 1, 0.1) 0%,
                transparent 50%,
                rgba(255, 231, 1, 0.1) 100%);
    z-index: 0;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    margin-bottom: 25px;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.cta-content p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.7;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 25px;
    margin-top: 30px;
    flex-wrap: wrap;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.main-footer {
    background-color: var(--primary-black);
    color: var(--white);
    padding: clamp(60px, 8vw, 100px) 0 40px;
    position: relative;
}

.main-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, 
                var(--primary-yellow) 0%,
                var(--white) 50%,
                var(--primary-yellow) 100%);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: clamp(30px, 4vw, 60px);
    margin-bottom: 50px;
}

.footer-logo h2 {
    font-size: clamp(1.8rem, 3vw, 2.2rem);
    margin-bottom: 20px;
    color: var(--white);
}

.footer-logo .logo-highlight {
    color: var(--primary-yellow);
}

.footer-logo p {
    opacity: 0.8;
    margin-bottom: 25px;
    line-height: 1.7;
    font-size: 0.95rem;
}

.footer-links h3,
.footer-contact h3 {
    font-size: clamp(1.2rem, 2vw, 1.4rem);
    margin-bottom: 25px;
    color: var(--primary-yellow);
    position: relative;
    padding-bottom: 10px;
}

.footer-links h3::after,
.footer-contact h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 3px;
    background-color: var(--primary-yellow);
    border-radius: 2px;
}

.footer-links ul {
    list-style: none;
    padding-left: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--primary-yellow);
    transform: translateX(5px);
}

.footer-links a::before {
    content: '›';
    color: var(--primary-yellow);
    font-weight: bold;
    transition: transform var(--transition-fast);
}

.footer-links a:hover::before {
    transform: translateX(3px);
}

.contact-info-footer p {
    margin-bottom: 18px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    opacity: 0.8;
    font-size: 0.95rem;
}

.contact-info-footer i {
    color: var(--primary-yellow);
    width: 20px;
    font-size: 1.1rem;
    margin-top: 2px;
    flex-shrink: 0;
}

.social-icons {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    text-decoration: none;
    transition: all var(--transition-medium);
    font-size: 1.1rem;
    position: relative;
    overflow: hidden;
}

.social-icons a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 231, 1, 0.2), transparent);
    transition: left var(--transition-slow);
}

.social-icons a:hover {
    background-color: var(--primary-yellow);
    color: var(--primary-black);
    transform: translateY(-5px) scale(1.1);
}

.social-icons a:hover::before {
    left: 100%;
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    opacity: 0.7;
    line-height: 1.6;
}

.footer-bottom p {
    margin-bottom: 10px;
}

.footer-bottom p:last-child {
    margin-bottom: 0;
}

/* ==========================================================================
   Animasyonlar
   ========================================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Animation Classes */
.fade-in-up {
    animation: fadeInUp var(--transition-slow) ease-out forwards;
}

.fade-in-left {
    animation: fadeInLeft var(--transition-slow) ease-out forwards;
}

.fade-in-right {
    animation: fadeInRight var(--transition-slow) ease-out forwards;
}

.scale-in {
    animation: scaleIn var(--transition-slow) ease-out forwards;
}

.pulse {
    animation: pulse 2s infinite ease-in-out;
}

.slide-in-left {
    animation: slideInLeft var(--transition-slow) ease-out forwards;
}

.slide-in-right {
    animation: slideInRight var(--transition-slow) ease-out forwards;
}

/* Delay Classes */
.delay-100 {
    animation-delay: 100ms;
}

.delay-200 {
    animation-delay: 200ms;
}

.delay-300 {
    animation-delay: 300ms;
}

.delay-400 {
    animation-delay: 400ms;
}

.delay-500 {
    animation-delay: 500ms;
}

/* ==========================================================================
   Responsive Tasarım
   ========================================================================== */

/* Tablet (768px - 991px) */
@media (max-width: 991px) {
    :root {
        --container-padding: 30px;
    }
    
    .innovation-content,
    .renew-content,
    .bamboo-content,
    .acai-content,
    .pentavitin-content,
    .venuceane-content,
    .sustainability-content {
        flex-direction: column;
        gap: 50px;
    }
    
    .renew-features,
    .bamboo-stats,
    .protection-types,
    .sustainability-principles {
        grid-template-columns: 1fr;
    }
    
    .treatments-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }
    
    .comparison-items {
        flex-direction: column;
        gap: 20px;
    }
    
    .comparison-item.pentavitin {
        border-right: none;
        border-bottom: 2px solid var(--medium-gray);
        padding-bottom: 30px;
        margin-bottom: 30px;
    }
    
    .main-nav ul {
        gap: 25px;
    }
}

/* Mobil (max-width: 767px) */
@media (max-width: 767px) {
    :root {
        --container-padding: 20px;
        --header-height: 70px;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .main-nav ul {
        display: none;
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background-color: var(--white);
        flex-direction: column;
        padding: 25px;
        box-shadow: 0 15px 30px var(--shadow-medium);
        z-index: 1000;
        max-height: calc(100vh - var(--header-height));
        overflow-y: auto;
    }
    
    .main-nav.active ul {
        display: flex;
    }
    
    .main-nav li {
        margin: 10px 0;
        width: 100%;
    }
    
    .main-nav a {
        padding: 12px 0;
        width: 100%;
        border-bottom: 1px solid var(--medium-gray);
    }
    
    .main-nav a:last-child {
        border-bottom: none;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 20px;
    }
    
    .hero .btn,
    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .top-bar-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
    
    .contact-info {
        justify-content: center;
        gap: 15px;
    }
    
    .ingredients-grid {
        grid-template-columns: 1fr;
    }
    
    .quality-grid {
        grid-template-columns: 1fr;
    }
    
    .treatments-grid {
        grid-template-columns: 1fr;
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-group .btn {
        width: 100%;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links h3::after,
    .footer-contact h3::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .contact-info-footer p {
        justify-content: center;
    }
    
    .social-icons {
        justify-content: center;
    }
}

/* Küçük Mobil (max-width: 480px) */
@media (max-width: 480px) {
    :root {
        --container-padding: 15px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .hero {
        padding: 80px 0;
        background-attachment: scroll;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section-title h2 {
        font-size: 1.6rem;
    }
    
    .innovation-text h3,
    .renew-text h3,
    .bamboo-text h3,
    .acai-text h3,
    .pentavitin-text h3,
    .venuceane-text h3,
    .sustainability-text h3 {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 0.95rem;
    }
    
    .footer-logo h2 {
        font-size: 1.6rem;
    }
    
    .cta-content h2 {
        font-size: 1.6rem;
    }
    
    .cta-content p {
        font-size: 1rem;
    }
}

/* Yüksek Çözünürlük Ekranlar */
@media (min-width: 1400px) {
    :root {
        --container-width: 1320px;
    }
}

/* Koyu Tema Desteği */
@media (prefers-color-scheme: dark) {
    :root {
        --primary-black: #ffffff;
        --primary-black-light: #f0f0f0;
        --white: #121212;
        --off-white: #1a1a1a;
        --light-gray: #2a2a2a;
        --medium-gray: #3a3a3a;
        --dark-gray: #cccccc;
        --text-dark: #f0f0f0;
        --text-medium: #dddddd;
        --text-light: #bbbbbb;
        --text-lighter: #999999;
        --shadow-light: rgba(0, 0, 0, 0.3);
        --shadow-medium: rgba(0, 0, 0, 0.4);
        --shadow-dark: rgba(0, 0, 0, 0.6);
    }
    
    .main-header {
        background-color: var(--white);
    }
    
    .ingredient-card,
    .treatment-card,
    .quality-card,
    .renew-feature,
    .bamboo-stat,
    .protection-type {
        background-color: var(--off-white);
    }
    
    .btn-outline {
        border-color: var(--primary-black-light);
        color: var(--primary-black-light);
    }
    
    .btn-outline:hover {
        background-color: var(--primary-black-light);
        color: var(--white);
    }
}

/* Yazdırma Stilleri */
@media print {
    .top-bar,
    .main-header,
    .hero-buttons,
    .btn,
    .social-icons,
    .footer-bottom {
        display: none !important;
    }
    
    body {
        color: #000;
        background: #fff;
        font-size: 12pt;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .section {
        padding: 20pt 0;
        page-break-inside: avoid;
    }
    
    a {
        color: #000;
        text-decoration: none;
    }
    
    a[href]::after {
        content: " (" attr(href) ")";
        font-size: 10pt;
    }
    
    img {
        max-width: 100% !important;
        page-break-inside: avoid;
    }
    
    h1, h2, h3, h4 {
        page-break-after: avoid;
    }
    
    .hero {
        background: none !important;
        color: #000;
        padding: 20pt 0;
    }
    
    .hero::before {
        display: none;
    }
}