/**
 * CashVers Clean Design System
 * Minimal, professional, crypto-tech aesthetic
 * Inspired by: Coinbase, Stripe, Linear
 */

/* ========================================
   DESIGN TOKENS
   ======================================== */

:root {
    /* Colors */
    --primary: #00D9FF;
    --primary-hover: #00B8D9;
    --primary-soft: rgba(0, 217, 255, 0.1);
    --primary-glow: rgba(0, 217, 255, 0.4);
    
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #141414;
    --bg-elevated: #1a1a1a;
    
    --text-primary: #FFFFFF;
    --text-secondary: #A0A0A0;
    --text-tertiary: #606060;
    
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-normal: rgba(255, 255, 255, 0.1);
    --border-emphasis: rgba(0, 217, 255, 0.3);
    
    --success: #00C853;
    --warning: #FFB300;
    --error: #FF3D00;
    
    /* Spacing Scale (4px base) */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
    --space-8: 64px;
    --space-9: 96px;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 24px var(--primary-glow);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ========================================
   BASE RESET
   ======================================== */

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

body {
    font-family: var(--font-primary) !important;
    background: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Remove old messy backgrounds */
.wrapper::before,
.landing-page::before,
body::before {
    display: none !important;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(28px, 4vw, 40px); margin-bottom: var(--space-3); }
h2 { font-size: clamp(22px, 3.5vw, 32px); margin-bottom: var(--space-3); }
h3 { font-size: clamp(18px, 2.5vw, 26px); margin-bottom: var(--space-3); }
h4 { font-size: clamp(16px, 2vw, 20px); margin-bottom: var(--space-2); }

p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.text-primary { color: var(--text-primary) !important; }
.text-secondary { color: var(--text-secondary) !important; }
.text-accent { color: var(--primary) !important; }

/* ========================================
   LAYOUT & SPACING
   ======================================== */

.section {
    padding: var(--space-8) var(--space-4);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.grid {
    display: grid;
    gap: var(--space-5);
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.card-clean {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-normal);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    transition: all var(--transition-base);
}

.card-clean:hover {
    border-color: var(--border-emphasis);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

.card-flat {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-5);
}

/* ========================================
   BUTTONS
   ======================================== */

.btn-primary {
    background: var(--primary) !important;
    color: #000000 !important;
    border: none !important;
    padding: 14px 32px !important;
    border-radius: var(--radius-md) !important;
    font-weight: 600 !important;
    font-size: 15px !important;
    cursor: pointer;
    transition: all var(--transition-base) !important;
    box-shadow: 0 0 20px rgba(0, 217, 255, 0.2) !important;
}

.btn-primary:hover {
    background: var(--primary-hover) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.4) !important;
}

.btn-secondary {
    background: transparent !important;
    color: var(--primary) !important;
    border: 2px solid var(--primary) !important;
    padding: 12px 28px !important;
    border-radius: var(--radius-md) !important;
    font-weight: 600 !important;
    transition: all var(--transition-base) !important;
}

.btn-secondary:hover {
    background: var(--primary) !important;
    color: #000000 !important;
}

.btn-ghost {
    background: transparent !important;
    color: var(--text-secondary) !important;
    border: 1px solid var(--border-normal) !important;
    padding: 10px 24px !important;
    border-radius: var(--radius-md) !important;
    transition: all var(--transition-base) !important;
    text-decoration: none !important;
    display: inline-block;
}

.btn-ghost:hover {
    border-color: var(--border-emphasis) !important;
    color: var(--text-primary) !important;
}

.btn-sm {
    padding: 8px 16px !important;
    font-size: 13px !important;
    border-radius: var(--radius-sm) !important;
}

/* ========================================
   FORMS
   ======================================== */

.form-input {
    background: var(--bg-tertiary) !important;
    border: 1px solid var(--border-normal) !important;
    color: var(--text-primary) !important;
    padding: 12px 16px !important;
    border-radius: var(--radius-md) !important;
    font-size: 15px !important;
    width: 100%;
    transition: all var(--transition-base) !important;
}

.form-input:focus {
    outline: none !important;
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px var(--primary-soft) !important;
}

.form-input::placeholder {
    color: var(--text-tertiary) !important;
}

.form-label {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    margin-bottom: var(--space-2);
    display: block;
}

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

.nav-clean {
    background: rgba(10, 10, 10, 0.95) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle) !important;
    padding: var(--space-4) 0 !important;
}

.nav-link-clean {
    color: var(--text-secondary) !important;
    font-size: 14px !important;
    font-weight: 500 !important;
    padding: var(--space-2) var(--space-4) !important;
    border-radius: var(--radius-sm) !important;
    transition: all var(--transition-fast) !important;
}

.nav-link-clean:hover {
    color: var(--primary) !important;
    background: var(--primary-soft) !important;
}

.nav-link-clean.active {
    color: var(--primary) !important;
    background: var(--primary-soft) !important;
}

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

.stat-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-normal);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: center;
    transition: all var(--transition-base);
}

.stat-card:hover {
    border-color: var(--border-emphasis);
    transform: translateY(-4px);
}

.stat-value {
    font-size: 48px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: var(--space-3);
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ========================================
   OFFER CARDS (CLEAN)
   ======================================== */

.offer-card-clean {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-normal);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    z-index: 1;
}

.offer-card-clean:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
    z-index: 10;
}

.offer-card-clean:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.offer-header {
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--bg-elevated);
}

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

.offer-card-clean:hover .offer-image {
    transform: scale(1.05);
}

.offer-image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-elevated) 0%, var(--bg-tertiary) 100%);
    font-size: 48px;
    font-weight: 700;
    color: var(--text-tertiary);
}

.offer-body {
    padding: var(--space-4);
    flex: 1;
}

.offer-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    line-height: 1.4;
}

.offer-requirements {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--space-3);
}

.offer-meta {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.offer-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.offer-reward-section {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.offer-reward-label {
    font-size: 11px;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.offer-reward {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.offer-cta {
    padding: 10px 20px !important;
    font-size: 14px !important;
    white-space: nowrap;
}

/* ========================================
   MODALS
   ======================================== */

.modal-clean .modal-content {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-normal) !important;
    border-radius: var(--radius-xl) !important;
    padding: var(--space-6) !important;
}

.modal-clean .modal-header {
    border-bottom: 1px solid var(--border-subtle) !important;
    padding-bottom: var(--space-4) !important;
}

.modal-clean .modal-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

/* ========================================
   TABLES
   ======================================== */

.table-clean {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.table-clean th {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--border-normal);
}

.table-clean td {
    padding: var(--space-4);
    border-bottom: 1px solid var(--border-subtle);
    color: var(--text-primary);
}

.table-clean tr:hover td {
    background: var(--bg-tertiary);
}

/* ========================================
   BADGES & TAGS
   ======================================== */

.badge-clean {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.03em;
}

.badge-primary {
    background: var(--primary-soft);
    color: var(--primary);
}

.badge-success {
    background: rgba(0, 200, 83, 0.1);
    color: var(--success);
}

.badge-warning {
    background: rgba(255, 179, 0, 0.1);
    color: var(--warning);
}

.badge-error {
    background: rgba(255, 61, 0, 0.1);
    color: var(--error);
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.glow {
    box-shadow: var(--shadow-glow) !important;
}

.border-glow {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px var(--primary-soft) !important;
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, #0EA5E9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Remove ALL old messy effects */
.decorative-dots,
.shape-l,
.shape-r,
.site-name,
.dark-name {
    display: none !important;
}

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

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(0, 217, 255, 0.2);
    }
    50% {
        box-shadow: 0 0 40px rgba(0, 217, 255, 0.4);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in {
    animation: fadeIn 0.4s ease-out;
}

/* ========================================
   OVERRIDES (CLEAN UP OLD MESS)
   ======================================== */

/* Remove old primary color (red) */
.btn.primary-btn,
.cta-button-modern,
.nav-btn-signup {
    background: var(--primary) !important;
    color: #000000 !important;
    border: none !important;
}

/* Clean up navigation */
nav.top-nav,
.side-nav,
.bottom-menu {
    background: var(--bg-secondary) !important;
    border-color: var(--border-subtle) !important;
}

/* Clean up cards */
.card,
.profile-card,
.redeem-card {
    background: var(--bg-tertiary) !important;
    border: 1px solid var(--border-normal) !important;
    border-radius: var(--radius-lg) !important;
}

/* Clean up forms */
.form-control {
    background: var(--bg-tertiary) !important;
    border: 1px solid var(--border-normal) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-md) !important;
    padding: 12px 16px !important;
}

.form-control:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 3px var(--primary-soft) !important;
}

/* Clean up modals */
.modal-content {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-normal) !important;
    border-radius: var(--radius-xl) !important;
}

/* Clean up footer */
footer {
    background: var(--bg-secondary) !important;
    border-top: 1px solid var(--border-subtle) !important;
}

/* ========================================
   RESPONSIVE
   ======================================== */

@media (max-width: 768px) {
    .section {
        padding: var(--space-7) var(--space-4);
    }
    
    h1 { font-size: clamp(28px, 8vw, 40px); }
    h2 { font-size: clamp(24px, 6vw, 32px); }
}