/* ========================================
   CLIMATOLOGY LAB - UNIFIED DESIGN SYSTEM
   Global styles for all pages
   ======================================== */

/* === CSS VARIABLES === */
:root {
    /* Brand Colors */
    --color-red: #E74C3C;
    --color-yellow: #F1C40F;
    --color-blue: #4A90E2;
    --color-blue-dark: #357ABD;
    --color-navy: #1E3A5F;
    --color-green: #2ECC71;

    /* Neutrals */
    --color-white: #FFFFFF;
    --color-off-white: #FAFAFA;
    --color-gray-light: #F8F9FA;
    --color-gray: #E8E8E8;
    --color-gray-medium: #CCCCCC;
    --color-gray-dark: #999999;
    --color-text-primary: #333333;
    --color-text-secondary: #666666;
    --color-text-light: #999999;

    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 40px;
    --spacing-xl: 60px;
    --spacing-2xl: 80px;
    --spacing-3xl: 100px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-pill: 50px;
    --radius-circle: 50%;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 25px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 35px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Typography */
    --font-family: 'Inter', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 600;
    --font-weight-bold: 700;
    --font-weight-black: 800;

    /* Fluid Typography (Responsive Scaling) */
    --font-size-h1: clamp(32px, 8vw, 72px);
    --font-size-h2: clamp(26px, 6vw, 48px);
    --font-size-h3: clamp(20px, 4vw, 32px);
    --font-size-body: clamp(14px, 1.5vw, 16px);
}

/* === GLOBAL RESETS === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--color-text-primary);
    line-height: 1.6;
    background-color: var(--color-white);
    overflow-x: hidden;
    /* Prevent horizontal scrolling */
}

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

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

button {
    font-family: inherit;
    border: none;
    cursor: pointer;
    transition: var(--transition-normal);
}

/* === CONTAINER === */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-wide {
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 var(--spacing-2xl);
}

/* === PAGE HERO TEMPLATE === */
.page-hero {
    background: var(--color-off-white);
    padding: var(--spacing-2xl) 0 var(--spacing-xl);
    border-bottom: 2px solid var(--color-gray);
}

.hero-title {
    font-size: clamp(40px, 8vw, 72px);
    font-weight: var(--font-weight-black);
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    letter-spacing: -2px;
    line-height: 1.1;
    word-break: break-word;
    /* Prevent long words from breaking layout */
}

.hero-title.color-red {
    color: var(--color-red);
}

.hero-title.color-yellow {
    color: var(--color-yellow);
}

.hero-title.color-blue {
    color: var(--color-blue);
}

.hero-subtitle {
    font-size: clamp(16px, 3vw, 20px);
    color: var(--color-text-secondary);
    max-width: 700px;
    line-height: 1.6;
}

/* === CARD DESIGN STANDARD === */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--color-gray);
    transition: all var(--transition-slow);
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.card-image {
    width: 100%;
    height: 240px;
    overflow: hidden;
    background: var(--color-gray-light);
    position: relative;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.card:hover .card-image img {
    transform: scale(1.08);
}

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

.card-title {
    font-size: 20px;
    font-weight: var(--font-weight-bold);
    color: var(--color-navy);
    margin-bottom: var(--spacing-sm);
    line-height: 1.4;
}

.card-description {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    /* Support for tight spaces */
    gap: var(--spacing-sm);
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 12px 24px;
    border-radius: var(--radius-pill);
    font-size: 14px;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all var(--transition-normal);
}

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

.btn-primary:hover {
    background: var(--color-blue-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.3);
}

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

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

.btn-icon svg {
    transition: transform var(--transition-normal);
}

.btn:hover .btn-icon svg {
    transform: translateX(4px);
}

/* === TAGS & BADGES === */
.tag {
    display: inline-block;
    padding: 6px 14px;
    background: #E8F4FD;
    color: var(--color-blue);
    border-radius: var(--radius-pill);
    font-size: 12px;
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    font-size: 11px;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    box-shadow: var(--shadow-sm);
}

.badge-success {
    background: var(--color-green);
    color: var(--color-white);
}

.badge-info {
    background: var(--color-blue);
    color: var(--color-white);
}

.badge-warning {
    background: var(--color-yellow);
    color: var(--color-text-primary);
}

/* === GRID LAYOUTS === */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

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

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* Auto-fit responsive grids */
.grid-auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* === SECTION SPACING === */
.section {
    padding: var(--spacing-2xl) 0;
    background: var(--color-white);
}

.section-alt {
    background: var(--color-off-white);
}

.section-title {
    font-size: clamp(28px, 5vw, 40px);
    font-weight: var(--font-weight-medium);
    color: var(--color-navy);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* === ANIMATIONS === */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }

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

.fade-in {
    animation: fadeIn 0.6s ease;
}

.slide-in-left {
    animation: slideInLeft 0.6s ease;
}

.slide-in-right {
    animation: slideInRight 0.6s ease;
}

/* === RESPONSIVE BREAKPOINTS === */
@media (max-width: 1200px) {
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1024px) {
    .container-wide {
        padding: 0 var(--spacing-lg);
    }

    .grid-3,
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .page-hero {
        padding: var(--spacing-xl) 0 var(--spacing-lg);
    }

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

@media (max-width: 480px) {
    :root {
        --spacing-lg: 25px;
        --spacing-xl: 35px;
        --spacing-2xl: 45px;
    }

    .container {
        padding: 0 16px;
    }

    .card-content {
        padding: 20px;
    }
}

/* === ENHANCED BIG SCREEN SUPPORT === */
@media (min-width: 1600px) {
    .container-wide {
        max-width: 1500px;
    }

    .hero-title {
        font-size: 84px;
    }
}

@media (min-width: 2000px) {
    .container-wide {
        max-width: 1800px;
    }
}

/* === UTILITY CLASSES === */
.text-center {
    text-align: center;
}

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

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

.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);
}

.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);
}

.hidden-mobile {
    display: block;
}

@media (max-width: 768px) {
    .hidden-mobile {
        display: none;
    }
}

.hidden-desktop {
    display: none;
}

@media (max-width: 768px) {
    .hidden-desktop {
        display: block;
    }
}