/* ========================================
   TASNIM - Essential Oils
   Premium Design System
   ======================================== */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

/* ========================================
   CSS VARIABLES - Design Tokens
   ======================================== */

:root {
    /* Color Palette - Natural & Elegant */
    --color-olive-green: #6B8E23;
    --color-sage-green: #9CAF88;
    --color-dark-green: #2D5016;
    --color-off-white: #FAF8F3;
    --color-beige-light: #E8E3D6;
    --color-gold: #C9A961;
    --color-brown-natural: #8B7355;

    /* Semantic Colors */
    --color-primary: var(--color-olive-green);
    --color-secondary: var(--color-sage-green);
    --color-accent: var(--color-gold);
    --color-text-dark: #1a1a1a;
    --color-text-light: #4a4a4a;
    --color-text-muted: #6a6a6a;
    --color-background: var(--color-off-white);
    --color-surface: #ffffff;

    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-lg: 1.125rem;
    /* 18px */
    --font-size-xl: 1.25rem;
    /* 20px */
    --font-size-2xl: 1.5rem;
    /* 24px */
    --font-size-3xl: 1.875rem;
    /* 30px */
    --font-size-4xl: 2.25rem;
    /* 36px */
    --font-size-5xl: 3rem;
    /* 48px */
    --font-size-6xl: 3.75rem;
    /* 60px */

    /* Spacing */
    --spacing-xs: 0.25rem;
    /* 4px */
    --spacing-sm: 0.5rem;
    /* 8px */
    --spacing-md: 1rem;
    /* 16px */
    --spacing-lg: 1.5rem;
    /* 24px */
    --spacing-xl: 2rem;
    /* 32px */
    --spacing-2xl: 3rem;
    /* 48px */
    --spacing-3xl: 4rem;
    /* 64px */
    --spacing-4xl: 6rem;
    /* 96px */
    --spacing-5xl: 8rem;
    /* 128px */

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(45, 80, 22, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(45, 80, 22, 0.1), 0 2px 4px -1px rgba(45, 80, 22, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(45, 80, 22, 0.1), 0 4px 6px -2px rgba(45, 80, 22, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(45, 80, 22, 0.1), 0 10px 10px -5px rgba(45, 80, 22, 0.04);

    /* Border Radius */
    --radius-sm: 0.25rem;
    /* 4px */
    --radius-md: 0.5rem;
    /* 8px */
    --radius-lg: 0.75rem;
    /* 12px */
    --radius-xl: 1rem;
    /* 16px */
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Z-index */
    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
    --z-popover: 500;
    --z-tooltip: 600;
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text-dark);
    background-color: var(--color-background);
    overflow-x: hidden;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-dark-green);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-5xl);
    font-weight: 700;
}

h2 {
    font-size: var(--font-size-4xl);
}

h3 {
    font-size: var(--font-size-3xl);
}

h4 {
    font-size: var(--font-size-2xl);
}

h5 {
    font-size: var(--font-size-xl);
}

h6 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-light);
}

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

a:hover {
    color: var(--color-dark-green);
}

/* ========================================
   LAYOUT UTILITIES
   ======================================== */

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-wide {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) 0;
}

.section-sm {
    padding: var(--spacing-3xl) 0;
}

.section-lg {
    padding: var(--spacing-5xl) 0;
}

/* ========================================
   GRID SYSTEM
   ======================================== */

.grid {
    display: grid;
    gap: var(--spacing-xl);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* ========================================
   FLEXBOX UTILITIES
   ======================================== */

.flex {
    display: flex;
}

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

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

.flex-col {
    display: flex;
    flex-direction: column;
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-align: center;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-olive-green), var(--color-dark-green));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

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

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

.btn-accent {
    background: linear-gradient(135deg, var(--color-gold), var(--color-brown-natural));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

/* ========================================
   CARDS
   ======================================== */

.card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.card-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.card-title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark-green);
}

.card-description {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

/* Product Card Styles */
.product-card {
    display: flex;
    flex-direction: column;
}

.product-img-wrapper {
    width: 100%;
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.product-content {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--color-sage-green), var(--color-olive-green));
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    align-self: flex-start;
    box-shadow: var(--shadow-sm);
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */

.header {
    position: sticky;
    top: 0;
    background: rgba(250, 248, 243, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: var(--z-sticky);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-family: var(--font-heading);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-dark-green);
}

.logo-img {
    height: 50px;
    width: auto;
    padding: var(--spacing-xs);
    background: rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 8px rgba(107, 142, 35, 0.08);
    transition: all var(--transition-base);
}

.logo-img:hover {
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 4px 12px rgba(107, 142, 35, 0.12);
}

.nav-links {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
}

.nav-link {
    font-weight: 500;
    color: var(--color-text-dark);
    position: relative;
    padding: var(--spacing-sm) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

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

.nav-link:hover {
    color: var(--color-primary);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-dark-green);
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
    filter: brightness(0.95) contrast(1.1);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom,
            rgba(45, 80, 22, 0.3) 0%,
            rgba(45, 80, 22, 0.5) 50%,
            rgba(45, 80, 22, 0.7) 100%);
    z-index: -1;
}

.hero-content {
    position: relative;
    z-index: var(--z-base);
    color: white;
    max-width: 900px;
    padding: var(--spacing-2xl);
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: var(--font-size-6xl);
    color: white;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.5), 0 2px 4px rgba(0, 0, 0, 0.3);
    letter-spacing: 1px;
}

.hero-subtitle {
    font-size: var(--font-size-2xl);
    font-weight: 300;
    color: white;
    margin-bottom: var(--spacing-2xl);
    font-family: var(--font-heading);
    font-style: italic;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
    opacity: 0.95;
}

.hero .btn-accent {
    padding: 14px 36px;
    font-size: var(--font-size-base);
    font-weight: 500;
    background: transparent;
    color: white;
    border: 2px solid white;
    border-radius: 8px;
    box-shadow: none;
    transition: all var(--transition-base);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-top: var(--spacing-lg);
}

.hero .btn-accent:hover {
    transform: translateY(-2px);
    background: white;
    color: var(--color-dark-green);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: var(--color-dark-green);
    color: var(--color-beige-light);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: var(--spacing-5xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h3 {
    color: white;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
}

.footer-section p,
.footer-section a {
    color: var(--color-beige-light);
    font-size: var(--font-size-sm);
}

.footer-section a:hover {
    color: var(--color-gold);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(232, 227, 214, 0.2);
    font-size: var(--font-size-sm);
}

.footer-bottom p {
    color: white;
    margin: 0;
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.slide-up {
    animation: slideUp var(--transition-slow) ease-out;
}

.slide-down {
    animation: slideDown var(--transition-slow) ease-out;
}

/* Scroll Reveal Animation */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all var(--transition-slow);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Tablet */
@media (max-width: 768px) {
    :root {
        --font-size-6xl: 2.5rem;
        /* 40px */
        --font-size-5xl: 2rem;
        /* 32px */
        --font-size-4xl: 1.75rem;
        /* 28px */
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

    .hero-title {
        font-size: var(--font-size-5xl);
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: rgba(250, 248, 243, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--spacing-4xl) var(--spacing-2xl);
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-base);
        align-items: flex-start;
        justify-content: flex-start;
        gap: var(--spacing-lg);
    }

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

    .menu-toggle {
        display: flex;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
        transform: translateX(20px);
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    /* Améliorer les liens de navigation en mode mobile */
    .nav-links.active .nav-link {
        font-size: var(--font-size-lg);
        padding: var(--spacing-md) 0;
        width: 100%;
    }

    .nav-links.active .nav-link::after {
        bottom: var(--spacing-sm);
    }


    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        --font-size-6xl: 2rem;
        /* 32px */
        --font-size-5xl: 1.75rem;
        /* 28px */
        --font-size-4xl: 1.5rem;
        /* 24px */
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .hero {
        min-height: 70vh;
    }

    .hero-content {
        padding: var(--spacing-lg);
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }

    .card {
        padding: var(--spacing-lg);
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

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

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

.text-right {
    text-align: right;
}

.text-primary {
    color: var(--color-primary);
}

.text-accent {
    color: var(--color-accent);
}

.text-muted {
    color: var(--color-text-muted);
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

.mb-md {
    margin-bottom: var(--spacing-md);
}

.mb-lg {
    margin-bottom: var(--spacing-lg);
}

.mb-xl {
    margin-bottom: var(--spacing-xl);
}

.mb-2xl {
    margin-bottom: var(--spacing-2xl);
}

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

.mt-xl {
    margin-top: var(--spacing-xl);
}

.mt-2xl {
    margin-top: var(--spacing-2xl);
}

.hidden {
    display: none;
}

.visible {
    display: block;
}