/* ================================================
   Digital Card Platform - Modern Premium UI
   Redesigned for compact, professional SaaS look
   ================================================ */

/* ============================================
   Import Theme System (includes fonts)
   ============================================ */
@import url('theme.css');

/* ============================================
   Modern Design Tokens & CSS Variables
   ============================================ */
:root {
    /* Modern SaaS Gradient Colors */
    --primary-500: #5f5aff;
    --primary-600: #7c5cff;
    --primary-700: #9f6bff;
    --primary-gradient: linear-gradient(135deg, #5f5aff 0%, #7c5cff 50%, #9f6bff 100%);
    --primary-gradient-soft: linear-gradient(135deg, rgba(95, 90, 255, 0.1) 0%, rgba(159, 107, 255, 0.1) 100%);

    /* Accent Colors */
    --accent-blue: #4F46E5;
    --accent-purple: #7C3AED;
    --accent-pink: #EC4899;

    /* Neutral Palette */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    /* Status Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #3B82F6;

    /* Background & Text */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-tertiary: #6B7280;

    /* Modern Shadows */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px rgba(95, 90, 255, 0.3);
    --shadow-colored: 0 8px 24px rgba(95, 90, 255, 0.15);

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    /* Spacing Scale (Compact) */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;

    /* Typography Scale */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

::selection {
    background-color: var(--primary-500);
    color: white;
}

/* ============================================
   Typography (Modern Hierarchy)
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Manrope', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

h1 { font-size: var(--text-5xl); font-weight: 800; }
h2 { font-size: var(--text-4xl); font-weight: 700; }
h3 { font-size: var(--text-3xl); font-weight: 700; }
h4 { font-size: var(--text-2xl); font-weight: 600; }
h5 { font-size: var(--text-xl); font-weight: 600; }
h6 { font-size: var(--text-lg); font-weight: 600; }

p {
    font-size: var(--text-base);
    line-height: 1.75;
    color: var(--text-secondary);
    margin-bottom: var(--space-4);
}

a {
    color: var(--primary-500);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-600);
}

/* ============================================
   Container & Layout
   ============================================ */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container-narrow {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* ============================================
   Navigation Bar (Glassmorphism + Compact)
   ============================================ */
header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
    transition: all var(--transition-smooth);
}

header.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-md);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) 0;
    height: 72px;
}

.logo {
    font-size: var(--text-2xl);
    font-weight: 800;
    font-family: 'Manrope', sans-serif;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.03em;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.02);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-2);
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-links li {
    margin: 0;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: var(--text-sm);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
    letter-spacing: -0.01em;
}

.nav-links a:hover {
    color: var(--primary-500);
    background: var(--primary-gradient-soft);
}

.nav-links a.active {
    color: var(--primary-500);
    font-weight: 600;
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: var(--space-4);
    right: var(--space-4);
    height: 2px;
    background: var(--primary-gradient);
    border-radius: var(--radius-full);
}

/* Modern CTA Button in Nav */
.nav-links .btn-outline {
    background: transparent;
    border: 1.5px solid var(--primary-500);
    color: var(--primary-500);
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-full);
    font-weight: 600;
    transition: all var(--transition-base);
}

.nav-links .btn-outline:hover {
    background: var(--primary-500);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-colored);
}

/* ============================================
   Hero Section (Compact + Modern)
   ============================================ */
.hero {
    position: relative;
    padding: var(--space-20) 0 var(--space-16);
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f0ff 100%);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(95, 90, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(159, 107, 255, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 10s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(5deg); }
    66% { transform: translate(-20px, 20px) rotate(-5deg); }
}

.hero .container {
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--space-5);
    line-height: 1.1;
    letter-spacing: -0.03em;
    background: linear-gradient(135deg, #111827 0%, #4B5563 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease-out;
}

.hero p {
    font-size: var(--text-xl);
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto var(--space-8);
    line-height: 1.6;
    animation: fadeInUp 0.8s ease-out 0.1s both;
}

.hero .btn-group {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Modern Premium Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.01em;
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(95, 90, 255, 0.25);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--gray-300);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--primary-500);
    color: var(--primary-500);
    background: var(--primary-gradient-soft);
    transform: translateY(-2px);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

/* ============================================
   Feature Section (Compact Cards)
   ============================================ */
.features-section {
    padding: var(--space-16) 0;
    background: var(--bg-primary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-header h2 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
}

.section-header p {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-6);
}

.feature-card {
    background: white;
    padding: var(--space-8);
    border-radius: var(--radius-xl);
    border: 1px solid var(--gray-200);
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-smooth);
}

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

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-500);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
    display: block;
    filter: grayscale(0.2);
    transition: transform var(--transition-base);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
    color: var(--text-primary);
}

.feature-card p {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   CTA Section (Enhanced)
   ============================================ */
.cta-section {
    padding: var(--space-16) 0;
    background: var(--primary-gradient);
    position: relative;
    overflow: hidden;
    text-align: center;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.cta-section .container {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    font-size: var(--text-4xl);
    color: white;
    margin-bottom: var(--space-4);
}

.cta-section p {
    font-size: var(--text-xl);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section .btn {
    background: white;
    color: var(--primary-500);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.cta-section .btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

/* ============================================
   Footer (Modern Multi-Column)
   ============================================ */
footer {
    background: var(--gray-900);
    color: var(--gray-400);
    padding: var(--space-12) 0 var(--space-6);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h4 {
    color: white;
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: var(--space-2);
}

.footer-section a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--space-6);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--gray-500);
}

/* ============================================
   Forms (Modern Styling)
   ============================================ */
.form-group {
    margin-bottom: var(--space-5);
}

label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-sm);
    letter-spacing: -0.01em;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
textarea,
select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    background: white;
    transition: all var(--transition-base);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px var(--primary-gradient-soft);
}

/* ============================================
   Auth Pages
   ============================================ */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8f9ff 0%, #f0f0ff 100%);
    padding: var(--space-8);
}

.auth-box {
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    padding: var(--space-10);
    max-width: 480px;
    width: 100%;
    border: 1px solid var(--gray-200);
}

.auth-box h1 {
    text-align: center;
    margin-bottom: var(--space-8);
    font-size: var(--text-3xl);
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.hidden { display: none; }

/* ============================================
   Loading Spinner
   ============================================ */
#loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.spinner {
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top: 4px solid white;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    :root {
        --text-5xl: 2.5rem;
        --text-4xl: 2rem;
    }

    .hero {
        padding: var(--space-16) 0 var(--space-12);
    }
}

@media (max-width: 768px) {
    nav {
        flex-direction: column;
        height: auto;
        padding: var(--space-3) 0;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-2);
    }

    .hero {
        padding: var(--space-12) 0 var(--space-10);
    }

    .hero h1 {
        font-size: var(--text-3xl);
    }

    .hero p {
        font-size: var(--text-base);
    }

    .hero .btn-group {
        flex-direction: column;
        width: 100%;
    }

    .hero .btn {
        width: 100%;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .auth-box {
        padding: var(--space-6);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--space-4);
    }

    .hero h1 {
        font-size: var(--text-2xl);
    }

    .section-header h2 {
        font-size: var(--text-2xl);
    }
}