/* ============================================
   CSS VARIABLES (DESIGN TOKENS)
   ============================================ */
:root {
    /* Colors */
    --primary-color: #4F46E5; /* Indigo 600 */
    --primary-dark-color: #4338CA; /* Indigo 700 */
    --primary-light-color: #6366F1; /* Indigo 500 */
    --secondary-color: #6B7280; /* Gray 500 */
    --text-color: #1F2937; /* Gray 900 */
    --text-light-color: #4B5563; /* Gray 600 */
    --background-color: #F9FAFB; /* Lighter Gray */
    --border-color: #E5E7EB; /* Gray 200 */
    --success-color: #10B981; /* Green 500 */
    --danger-color: #EF4444; /* Red 500 */
    --warning-color: #F59E0B; /* Yellow 500 */
    --card-bg: #FFFFFF;

    /* Spacing */
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Border Radius */
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --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);

    /* Layout */
    --sidebar-width: 250px;
}

/* ============================================
   BASE STYLES
   ============================================ */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   LAYOUT UTILITIES
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

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

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 24px;
    border-radius: var(--border-radius-sm);
    font-size: 0.95em;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: 2px solid transparent;
    gap: var(--spacing-sm);
    white-space: nowrap;
}

.btn-lg {
    padding: 14px 32px;
    font-size: 1.05em;
}

.btn-block {
    width: 100%;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: #4B5563;
}

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

.btn-danger:hover {
    background-color: #DC2626;
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-1px);
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-light-color);
    font-size: 0.95em;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-size: 1em;
    font-family: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* ============================================
   ALERTS
   ============================================ */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    border-left: 4px solid;
}

.alert ul {
    margin: 0;
    padding-left: var(--spacing-lg);
}

.alert-success {
    background-color: #D2F7E6;
    color: #065F46;
    border-color: var(--success-color);
}

.alert-danger {
    background-color: #FEE2E2;
    color: #991B1B;
    border-color: var(--danger-color);
}

.alert-warning {
    background-color: #FEF3C7;
    color: #92400E;
    border-color: var(--warning-color);
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--border-color);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

/* ============================================
   TABLES
   ============================================ */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-lg);
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

table th,
table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

table th {
    background-color: #F3F4F6;
    font-weight: 600;
    color: var(--text-color);
    text-transform: uppercase;
    font-size: 0.85em;
}

table tr:last-child td {
    border-bottom: none;
}

table tbody tr:hover {
    background-color: #F9FAFB;
}

table .actions {
    display: flex;
    gap: var(--spacing-sm);
    white-space: nowrap;
}

table .actions a.btn,
table .actions button.btn {
    padding: 5px 10px;
    font-size: 0.8em;
}

/* ============================================
   PUBLIC HEADER
   ============================================ */
header.public-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) 0;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

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

header.public-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

header.public-header .logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

header.public-header .logo a {
    font-size: 1.75em;
    font-weight: 800;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: color 0.2s ease;
}

header.public-header .logo a:hover {
    color: var(--primary-light-color);
}

header.public-header nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

header.public-header nav a:not(.btn) {
    color: var(--text-light-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95em;
    transition: color 0.2s ease;
    white-space: nowrap;
    position: relative;
}

header.public-header nav a:not(.btn):hover {
    color: var(--primary-color);
}

header.public-header nav a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

header.public-header nav a:not(.btn):hover::after {
    width: 100%;
}

/* ============================================
   ENHANCED HERO SECTION
   ============================================ */
.hero-enhanced {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark-color) 100%);
    color: white;
    padding: var(--spacing-3xl) 0;
    position: relative;
    overflow: hidden;
}

.hero-enhanced::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="2" fill="rgba(255,255,255,0.05)"/></svg>');
    opacity: 0.4;
}

.hero-enhanced .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

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

.hero-badge {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: 0.85em;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    backdrop-filter: blur(10px);
}

.hero-enhanced h1 {
    font-size: 3.5em;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero-enhanced p {
    font-size: 1.3em;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.hero-trust p {
    font-size: 0.9em;
    opacity: 0.8;
    margin: 0;
}

.hero-image {
    position: relative;
}

.hero-mockup {
    animation: float 6s ease-in-out infinite;
}

.hero-mockup svg {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.2));
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats-section {
    padding: var(--spacing-2xl) 0;
    background-color: white;
    border-bottom: 1px solid var(--border-color);
}

.stats-grid-landing {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    text-align: center;
}

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

.stat-number {
    font-size: 3em;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    line-height: 1;
}

.stat-label {
    font-size: 1em;
    color: var(--text-light-color);
    font-weight: 500;
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-3xl);
}

.section-header h2 {
    font-size: 2.5em;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.section-header p {
    font-size: 1.2em;
    color: var(--text-light-color);
    max-width: 700px;
    margin: 0 auto;
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--background-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-light-color), var(--primary-color));
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    color: white;
}

.feature-card h3 {
    font-size: 1.4em;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
}

.feature-card p {
    color: var(--text-light-color);
    line-height: 1.6;
    margin: 0;
}

/* ============================================
   HOW IT WORKS SECTION
   ============================================ */
.how-it-works-section {
    padding: var(--spacing-3xl) 0;
    background-color: white;
}

.steps-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--spacing-lg);
    max-width: 1000px;
    margin: 0 auto;
}

.step-item {
    flex: 1;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-light-color), var(--primary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8em;
    font-weight: 700;
    margin: 0 auto var(--spacing-lg);
}

.step-item h3 {
    font-size: 1.3em;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
}

.step-item p {
    color: var(--text-light-color);
    line-height: 1.6;
}

.step-connector {
    width: 80px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-light-color), var(--primary-color));
    align-self: center;
    margin-top: 30px;
}

/* ============================================
   TESTIMONIALS SECTION
   ============================================ */
.testimonials-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--background-color);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.testimonial-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

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

.testimonial-rating {
    font-size: 1.2em;
    margin-bottom: var(--spacing-md);
}

.testimonial-text {
    font-size: 1.05em;
    line-height: 1.7;
    color: var(--text-color);
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-light-color), var(--primary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1em;
}

.author-name {
    font-weight: 700;
    color: var(--text-color);
}

.author-role {
    font-size: 0.9em;
    color: var(--text-light-color);
}

/* ============================================
   CTA SECTIONS
   ============================================ */
.cta-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark-color) 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5em;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 1.3em;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.cta-note p {
    font-size: 0.95em;
    opacity: 0.8;
    margin: 0;
}

/* ============================================
   PRICING SECTION
   ============================================ */
.pricing-preview-section {
    padding: var(--spacing-3xl) 0;
    background-color: white;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    max-width: 1100px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--border-color);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

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

.pricing-card-featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-light-color), var(--primary-color));
    color: white;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: 0.85em;
    font-weight: 700;
}

.pricing-card h3 {
    font-size: 1.5em;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: var(--spacing-lg);
}

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

.pricing-amount .currency {
    font-size: 1.5em;
    color: var(--text-light-color);
    vertical-align: top;
}

.pricing-amount .amount {
    font-size: 3.5em;
    font-weight: 800;
    color: var(--primary-color);
}

.pricing-amount .period {
    font-size: 1.1em;
    color: var(--text-light-color);
}

.pricing-amount .amount-custom {
    font-size: 2.5em;
    font-weight: 800;
    color: var(--primary-color);
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-xl) 0;
    text-align: left;
}

.pricing-features li {
    padding: var(--spacing-sm) 0;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
}

.pricing-features li:last-child {
    border-bottom: none;
}

/* ============================================
   FINAL CTA SECTION
   ============================================ */
.final-cta-section {
    padding: var(--spacing-3xl) 0;
    background-color: var(--background-color);
    text-align: center;
}

.final-cta-section h2 {
    font-size: 2.5em;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
}

.final-cta-section p {
    font-size: 1.2em;
    color: var(--text-light-color);
    margin-bottom: var(--spacing-xl);
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: linear-gradient(180deg, #1F2937 0%, #111827 100%);
    color: #F3F4F6;
    padding: var(--spacing-2xl) 0 var(--spacing-lg) 0;
    margin-top: 0;
    border-top: 1px solid #374151;
}

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

footer h3 {
    font-size: 1.5em;
    font-weight: 700;
    color: var(--primary-light-color);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

footer h4 {
    font-size: 1.1em;
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

footer p {
    color: #D1D5DB;
    font-size: 0.95em;
    line-height: 1.6;
}

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

footer ul li {
    margin-bottom: var(--spacing-sm);
}

footer a {
    color: #D1D5DB;
    text-decoration: none;
    font-size: 0.95em;
    transition: color 0.2s ease;
}

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

footer .social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

footer .social-links a {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #F3F4F6;
    transition: background-color 0.2s ease;
}

footer .social-links a:hover {
    background-color: rgba(79, 70, 229, 0.2);
}

footer .footer-bottom {
    border-top: 1px solid #374151;
    padding-top: var(--spacing-lg);
    text-align: center;
}

footer .footer-bottom p {
    color: #9CA3AF;
    font-size: 0.9em;
    margin: 0;
}

/* ============================================
   ADMIN & USER DASHBOARD SPECIFIC
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stats-grid .card {
    text-align: center;
    padding: var(--spacing-lg);
}

.stats-grid .card h3 {
    margin-top: 0;
    color: var(--text-light-color);
    font-size: 1em;
    text-transform: uppercase;
}

.stats-grid .card p {
    font-size: 2.2em;
    font-weight: 700;
    color: var(--primary-color);
    margin: var(--spacing-sm) 0 0;
    line-height: 1;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

main {
    animation: fadeIn 0.5s ease;
    min-height: auto;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 992px) {
    .hero-enhanced .container {
        grid-template-columns: 1fr;
    }
    
    .hero-image {
        display: none;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .steps-container {
        flex-direction: column;
    }
    
    .step-connector {
        display: none;
    }
}

@media (max-width: 768px) {
    header.public-header .container {
        flex-direction: column;
        align-items: flex-start;
    }

    header.public-header nav {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    header.public-header nav a.btn {
        flex-grow: 1;
        text-align: center;
    }

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

    .hero-enhanced h1 {
        font-size: 2.5em;
    }

    .hero-enhanced p {
        font-size: 1.1em;
    }

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

    .hero-cta .btn {
        width: 100%;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .cta-buttons .btn {
        width: 100%;
    }
    
    .section-header h2 {
        font-size: 2em;
    }

    footer .footer-grid {
        grid-template-columns: 1fr;
    }
}

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

    .hero-enhanced h1 {
        font-size: 2em;
    }

    .hero-enhanced p {
        font-size: 1em;
    }

    table {
        font-size: 0.85em;
    }

    table th,
    table td {
        padding: 8px 10px;
    }
    
    .stat-number {
        font-size: 2.5em;
    }
    
    .features-grid,
    .testimonials-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}