/* ===================================
   COMMON STYLES
   Shared styles across all pages
   =================================== */

/* ===================================
   BASE STYLES
   =================================== */

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    font-family: var(--font-sans);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
}

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

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

.animate-fadeInUp {
    animation: fadeInUp 1s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes logo-glow {
    0% {
        filter: drop-shadow(0 0 0px rgba(59, 130, 246, 0));
    }
    50% {
        filter: drop-shadow(0 0 8px rgba(59, 130, 246, 0.4));
    }
    100% {
        filter: drop-shadow(0 0 0px rgba(59, 130, 246, 0));
    }
}

/* Logo animations */
.logo-frame {
    stroke-dasharray: 180;
    stroke-dashoffset: 180;
    animation: logo-draw 1.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.logo-letter {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    animation: logo-draw 1.5s cubic-bezier(0.4, 0, 0.2, 1) 0.3s forwards;
}

@keyframes logo-draw {
    to {
        stroke-dashoffset: 0;
    }
}

.logo-container:hover .logo-frame,
.logo-container:hover .logo-letter {
    animation: logo-glow 2s ease-in-out infinite;
}

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

.nav-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-secondary);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-link {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
    text-decoration: none;
}

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

.nav-brand {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    transition: color var(--transition-base);
    text-decoration: none;
}

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

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

.heading-xl {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: var(--font-semibold);
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
}

.heading-lg {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-semibold);
    line-height: 1.2;
    letter-spacing: -0.025em;
    color: var(--color-text-primary);
}

.heading-md {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: var(--font-semibold);
    line-height: 1.3;
    color: var(--color-text-primary);
}

.body-lg {
    font-size: var(--text-lg);
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.body-md {
    font-size: var(--text-base);
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ===================================
   BUTTONS & LINKS
   =================================== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    text-decoration: none;
    cursor: pointer;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid rgba(59, 130, 246, 0.3);
}

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

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

.card {
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border-primary);
    overflow: hidden;
    transition: all var(--transition-slow);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: rgba(59, 130, 246, 0.2);
}

.card-image {
    aspect-ratio: 16/10;
    background: linear-gradient(to bottom right, #f1f5f9, #f8fafc, #f1f5f9);
    position: relative;
    overflow: hidden;
}

.card-content {
    padding: 2rem;
}

.card-tag {
    display: inline-block;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: var(--font-semibold);
    color: var(--color-text-secondary);
    background-color: var(--color-bg-tertiary);
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
}

.card-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--color-text-primary);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.card-description {
    font-size: 15px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-primary);
    text-decoration: none;
    transition: gap var(--transition-base);
}

.card-link:hover {
    gap: 0.5rem;
}

/* ===================================
   SECTIONS
   =================================== */

.section {
    padding: 8rem 2rem;
}

.section-secondary {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border-primary);
}

.section-container {
    max-width: 1280px;
    margin: 0 auto;
}

.section-header {
    margin-bottom: 5rem;
}

.section-label {
    display: inline-block;
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    font-weight: var(--font-semibold);
    margin-bottom: 1.5rem;
    padding: 0.625rem 1.25rem;
    background-color: rgba(59, 130, 246, 0.08);
    border-radius: var(--radius-md);
}

/* ===================================
   GRID LAYOUTS
   =================================== */

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

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

@media (min-width: 768px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

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

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}

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

.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mt-12 { margin-top: 3rem; }
.mt-16 { margin-top: 4rem; }

.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }

.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-5xl { max-width: 64rem; }

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}