/* ============================================
   DANISH (DA) UNIQUE DESIGN SYSTEM
   Elegant, Modern, Sophisticated
   Completely Distinct from CS Design
   ============================================ */

:root {
    --header-h: 80px;
    
    /* Unique DA Color Palette - Deep Ocean & Emerald */
    --da-primary: #0a2540;
    --da-primary-dark: #051a2e;
    --da-primary-light: #0f3a5c;
    --da-accent: #10b981;
    --da-accent-dark: #059669;
    --da-accent-light: #34d399;
    --da-secondary: #6366f1;
    --da-secondary-dark: #4f46e5;
    --da-gold: #f59e0b;
    --da-gold-light: #fbbf24;
    
    /* Neutral Palette */
    --da-text-dark: #0f172a;
    --da-text-muted: #64748b;
    --da-text-light: #94a3b8;
    --da-bg-light: #f8fafc;
    --da-bg-white: #ffffff;
    --da-border: #e2e8f0;
    --da-border-light: #f1f5f9;
    
    /* Gradients */
    --da-gradient-primary: linear-gradient(135deg, #0a2540 0%, #10b981 50%, #6366f1 100%);
    --da-gradient-hero: linear-gradient(135deg, #051a2e 0%, #0a2540 30%, #0f3a5c 100%);
    --da-gradient-accent: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    --da-gradient-card: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    --da-gradient-overlay: radial-gradient(circle at 30% 20%, rgba(16, 185, 129, 0.15), transparent 50%),
                           radial-gradient(circle at 70% 80%, rgba(99, 102, 241, 0.15), transparent 50%);
    
    /* Shadows */
    --da-shadow-sm: 0 2px 8px rgba(10, 37, 64, 0.08);
    --da-shadow-md: 0 4px 16px rgba(10, 37, 64, 0.12);
    --da-shadow-lg: 0 10px 40px rgba(10, 37, 64, 0.16);
    --da-shadow-xl: 0 20px 60px rgba(10, 37, 64, 0.2);
    --da-shadow-accent: 0 8px 24px rgba(16, 185, 129, 0.25);
    
    /* Spacing */
    --da-radius-sm: 8px;
    --da-radius-md: 12px;
    --da-radius-lg: 20px;
    --da-radius-xl: 28px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-h);
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--da-text-dark);
    background: var(--da-bg-light);
    line-height: 1.7;
    overflow-x: hidden;
    padding-top: var(--header-h);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
.da-brand-gradient {
    background: linear-gradient(135deg, #0a2540 0%, #10b981 50%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.da-hero-title-gradient {
    background: linear-gradient(135deg, #10b981 0%, #34d399 50%, #6366f1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.da-section-title-gradient {
    background: linear-gradient(135deg, #0a2540 0%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* ============================================
   BACKGROUNDS
   ============================================ */
.da-hero-bg {
    background: var(--da-gradient-hero);
    position: relative;
    overflow: hidden;
}

.da-hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--da-gradient-overlay);
    opacity: 0.6;
    pointer-events: none;
}

.da-hero-bg::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: da-float 20s ease-in-out infinite;
}

.da-section-bg {
    background: var(--da-bg-light);
    position: relative;
}

.da-section-bg-alt {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.da-cta-bg {
    background: linear-gradient(135deg, #0a2540 0%, #0f3a5c 50%, #051a2e 100%);
    position: relative;
    overflow: hidden;
}

.da-cta-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(16, 185, 129, 0.15), transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(99, 102, 241, 0.15), transparent 50%);
    pointer-events: none;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes da-float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    33% {
        transform: translate(30px, -30px) rotate(120deg);
    }
    66% {
        transform: translate(-20px, 20px) rotate(240deg);
    }
}

@keyframes da-slide-up {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes da-scale-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes da-pulse-glow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
    }
}

.da-animate-float {
    animation: da-float 15s ease-in-out infinite;
}

.da-animate-slide-up {
    animation: da-slide-up 0.6s ease-out;
}

.da-animate-scale-in {
    animation: da-scale-in 0.5s ease-out;
}

/* ============================================
   CARDS
   ============================================ */
.da-card {
    background: var(--da-bg-white);
    border-radius: var(--da-radius-lg);
    border: 1px solid var(--da-border);
    box-shadow: var(--da-shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.da-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--da-gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.da-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--da-shadow-lg);
    border-color: var(--da-accent-light);
}

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

.da-card-feature {
    padding: 2rem;
}

.da-card-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--da-radius-md);
    background: var(--da-gradient-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--da-shadow-accent);
}

.da-card-icon-alt {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

.da-card-icon-gold {
    background: linear-gradient(135deg, #f59e0b 0%, #fbbf24 100%);
}

/* ============================================
   BUTTONS
   ============================================ */
.da-btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--da-radius-md);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.da-btn-primary {
    background: var(--da-gradient-accent);
    color: white;
    box-shadow: var(--da-shadow-accent);
}

.da-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(16, 185, 129, 0.35);
}

.da-btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.da-btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

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

.da-btn-secondary:hover {
    background: var(--da-accent);
    color: white;
    transform: translateY(-2px);
}

.da-btn-submit {
    background: var(--da-gradient-primary);
    color: white;
    width: 100%;
    padding: 1rem;
    font-size: 0.9375rem;
    box-shadow: var(--da-shadow-md);
}

.da-btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--da-shadow-lg);
}

/* ============================================
   FORM ELEMENTS
   ============================================ */
.da-form-input {
    width: 100%;
    padding: 0.875rem 1.25rem;
    border-radius: var(--da-radius-md);
    border: 2px solid var(--da-border);
    background: var(--da-bg-white);
    color: var(--da-text-dark);
    font-size: 0.9375rem;
    transition: all 0.3s ease;
}

.da-form-input:focus {
    outline: none;
    border-color: var(--da-accent);
    box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.1);
    background: white;
}

.da-form-input::placeholder {
    color: var(--da-text-light);
}

.da-form-card {
    background: var(--da-bg-white);
    border-radius: var(--da-radius-xl);
    padding: 2.5rem;
    box-shadow: var(--da-shadow-xl);
    border: 1px solid var(--da-border-light);
    position: relative;
}

.da-form-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--da-gradient-accent);
    border-radius: var(--da-radius-xl) var(--da-radius-xl) 0 0;
}

/* ============================================
   GRID PATTERNS
   ============================================ */
.da-grid-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.03;
    background-image: 
        linear-gradient(var(--da-primary) 1px, transparent 1px),
        linear-gradient(90deg, var(--da-primary) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

/* ============================================
   HEADER STYLES
   ============================================ */
.da-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--da-border);
    box-shadow: var(--da-shadow-sm);
}

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

/* ============================================
   FOOTER STYLES
   ============================================ */
.da-footer {
    background: var(--da-gradient-hero);
    color: rgba(255, 255, 255, 0.9);
    position: relative;
    overflow: hidden;
}

.da-footer::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--da-gradient-overlay);
    opacity: 0.4;
    pointer-events: none;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    :root {
        --header-h: 70px;
    }
    
    .da-card-feature {
        padding: 1.5rem;
    }
    
    .da-form-card {
        padding: 1.75rem;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.da-text-muted {
    color: var(--da-text-muted);
}

.da-text-light {
    color: var(--da-text-light);
}

.da-border-top-accent {
    border-top: 4px solid;
    border-image: var(--da-gradient-accent) 1;
}

.da-shadow-accent {
    box-shadow: var(--da-shadow-accent);
}