/* ===== NULLTRACKER PAYMENT PAGE - MODERN DARK THEME ===== */

/* ===== BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Dark Theme Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #121212;
    --bg-tertiary: #1a1a1a;
    --bg-card: #1e1e1e;
    --bg-card-hover: #252525;
    --bg-accent: #2a2a2a;
    --bg-surface: #161616;
    --bg-hero: #0f0f0f;
    
    /* Purple Accent Colors */
    --purple-primary: #8b5cf6;
    --purple-secondary: #7c3aed;
    --purple-tertiary: #6d28d9;
    --purple-light: #a78bfa;
    --purple-dark: #5b21b6;
    --purple-glow: rgba(139, 92, 246, 0.3);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #e5e5e5;
    --text-tertiary: #b3b3b3;
    --text-muted: #808080;
    --text-accent: #a78bfa;
    
    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #06b6d4;
    
    /* Special Colors */
    --gold: #fbbf24;
    --blue: #3b82f6;
    --green: #10b981;
    --red: #ef4444;
    
    /* Gradients */
    --gradient-purple: linear-gradient(135deg, var(--purple-primary), var(--purple-secondary));
    --gradient-purple-light: linear-gradient(135deg, var(--purple-light), var(--purple-primary));
    --gradient-dark: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    --gradient-hero: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-hero) 50%, var(--bg-secondary) 100%);
    --gradient-card: linear-gradient(135deg, rgba(30, 30, 30, 0.8), rgba(37, 37, 37, 0.8));
    --gradient-gold: linear-gradient(135deg, #fbbf24, #f59e0b);
    --gradient-paypal: linear-gradient(135deg, #0070ba, #003087);
    --gradient-github: linear-gradient(135deg, #333, #24292e);
    --gradient-patreon: linear-gradient(135deg, #ff424d, #f96854);
    --gradient-kofi: linear-gradient(135deg, #ff5f5f, #29abe0);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
    --shadow-purple: 0 10px 15px -3px rgba(139, 92, 246, 0.3);
    --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.2);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease-out;
    --transition-normal: 0.25s ease-out;
    --transition-slow: 0.35s ease-out;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(139, 92, 246, 0.1);
    transition: all var(--transition-normal);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.nav-logo i {
    color: var(--purple-primary);
    font-size: 1.5rem;
}

.nav-logo:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
    margin: 0;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    position: relative;
}

.nav-link:hover {
    color: var(--purple-light);
    background: rgba(139, 92, 246, 0.1);
}

.nav-link.active {
    color: var(--purple-primary);
    background: rgba(139, 92, 246, 0.15);
}

/* ===== MAIN CONTENT ===== */
.payment-main {
    margin-top: 80px;
    min-height: calc(100vh - 80px);
}

/* ===== PAYMENT HERO SECTION ===== */
.payment-hero {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-hero);
    position: relative;
    overflow: hidden;
}

.payment-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 40%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.payment-hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

.gradient-text {
    background: var(--gradient-purple-light);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.payment-hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    max-width: 600px;
    margin: 0 auto;
}

.stat {
    text-align: center;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.stat:hover {
    background: rgba(139, 92, 246, 0.05);
    border-color: var(--purple-primary);
    transform: translateY(-2px);
}

.stat-number {
    display: block;
    font-size: 1.875rem;
    font-weight: 900;
    color: var(--purple-primary);
    margin-bottom: var(--spacing-xs);
    font-family: var(--font-mono);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ===== SERVICE PAYMENT SECTION ===== */
.service-payment-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
    position: relative;
}

.service-payment-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.service-payment-section h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 1.25rem;
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.service-payment-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
    position: relative;
    z-index: 2;
}

/* ===== SERVICES MENU ===== */
.services-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.service-row {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.service-row::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-purple);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.service-row:hover {
    background: var(--bg-card-hover);
    border-color: var(--purple-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.service-row:hover::before {
    transform: scaleX(1);
}

.service-info {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.service-icon {
    width: 60px;
    height: 60px;
    background: rgba(139, 92, 246, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-normal);
}

.service-icon i {
    font-size: 1.5rem;
    color: var(--purple-primary);
    transition: all var(--transition-normal);
}

.service-row:hover .service-icon {
    background: var(--purple-primary);
    transform: scale(1.05);
}

.service-row:hover .service-icon i {
    color: white;
    transform: scale(1.1);
}

.service-details h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.service-details p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.5;
}

.service-features-compact {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    line-height: 1.4;
}

.service-features-compact span {
    color: var(--purple-light);
    font-weight: 500;
}

/* ===== CUSTOM SELECT DROPDOWN ===== */
.service-selector {
    position: relative;
}

.tier-select {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
    background: var(--bg-accent);
    border: 2px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%238b5cf6' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right var(--spacing-md) center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
}

.tier-select:hover {
    border-color: var(--purple-primary);
    background-color: var(--bg-card);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.tier-select:focus {
    outline: none;
    border-color: var(--purple-primary);
    background-color: var(--bg-card);
    box-shadow: 0 0 0 3px var(--purple-glow);
}

.tier-select option {
    background: var(--bg-card);
    color: var(--text-primary);
    padding: var(--spacing-sm);
    border: none;
}

.tier-select option:hover {
    background: var(--purple-primary);
    color: white;
}

.tier-select.selected {
    border-color: var(--purple-primary);
    background: rgba(139, 92, 246, 0.1);
    color: var(--purple-light);
}

/* ===== PAYMENT SUMMARY ===== */
.payment-summary-sticky {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.summary-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-purple);
}

.summary-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
    text-align: center;
}

#selected-services {
    margin-bottom: var(--spacing-xl);
    min-height: 80px;
}

.no-selection {
    color: var(--text-muted);
    text-align: center;
    font-style: italic;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
}

.selected-service {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(139, 92, 246, 0.05);
    border: 1px solid rgba(139, 92, 246, 0.2);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-normal);
}

.selected-service:hover {
    background: rgba(139, 92, 246, 0.1);
    transform: translateX(2px);
}

.selected-service .service-name {
    color: var(--text-primary);
    font-weight: 600;
}

.selected-service .service-tier {
    color: var(--purple-light);
    font-size: 0.875rem;
    margin-left: var(--spacing-xs);
}

.selected-service .service-price {
    color: var(--purple-primary);
    font-weight: 700;
    font-family: var(--font-mono);
}

.total-section {
    border-top: 2px solid rgba(255, 255, 255, 0.08);
    padding-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.total-row:last-child {
    margin-bottom: 0;
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--purple-primary);
}

.yearly-discount {
    color: var(--green) !important;
    font-weight: 600;
}

.billing-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* ===== CUSTOM TOGGLE SWITCH ===== */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.1);
    transition: var(--transition-normal);
    border-radius: var(--radius-full);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.slider:before {
    position: absolute;
    content: "";
    height: 24px;
    width: 24px;
    left: 3px;
    bottom: 3px;
    background: var(--text-secondary);
    transition: var(--transition-normal);
    border-radius: 50%;
}

input:checked + .slider {
    background: var(--gradient-purple);
    border-color: var(--purple-primary);
}

input:checked + .slider:before {
    transform: translateX(26px);
    background: white;
}

.billing-toggle span {
    color: var(--text-secondary);
    font-weight: 500;
}

/* ===== PAYPAL BUTTON CONTAINER ===== */
#paypal-button-container {
    margin-top: var(--spacing-lg);
    min-height: 50px;
}

.paypal-disabled {
    opacity: 0.5;
    pointer-events: none;
    position: relative;
}

.paypal-disabled::after {
    content: 'Select services to enable payment';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--bg-card-hover);
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    text-align: center;
    white-space: nowrap;
}

/* ===== DONATION SECTION ===== */
.donation-section {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-primary);
    position: relative;
}

.donation-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.donation-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
    position: relative;
    z-index: 2;
}

.donation-text h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.emotional-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.impact-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

.impact-text strong {
    color: var(--text-primary);
}

.donation-methods h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
    text-align: center;
}

.donation-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.donation-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.donation-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left var(--transition-slow);
}

.donation-btn:hover::before {
    left: 100%;
}

.donation-btn.paypal {
    background: var(--gradient-paypal);
    color: white;
}

.donation-btn.github {
    background: var(--gradient-github);
    color: white;
}

.donation-btn.patreon {
    background: var(--gradient-patreon);
    color: white;
}

.donation-btn.opencollective {
    background: var(--gradient-purple);
    color: white;
}

.donation-btn.kofi {
    background: var(--gradient-kofi);
    color: white;
}

.donation-btn.liberapay {
    background: var(--gradient-gold);
    color: white;
}

.donation-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.donation-btn i {
    font-size: 1.25rem;
}

.donation-footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-style: italic;
}

.donation-footer i {
    color: var(--red);
    margin-right: var(--spacing-sm);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: var(--spacing-3xl) 0 var(--spacing-xl) 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

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

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

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-normal);
}

.footer-section a:hover {
    color: var(--purple-light);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    margin: 0;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
    .service-payment-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
    
    .payment-summary-sticky {
        position: static;
        order: -1;
    }
    
    .donation-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .service-info {
        flex-direction: column;
        text-align: center;
    }
    
    .service-icon {
        align-self: center;
    }
    
    .donation-buttons {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .nav-menu {
        display: none;
    }
}

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

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
    from {
        opacity: 0.3;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

.service-row {
    animation: fadeInUp 0.4s ease-out;
    animation-fill-mode: both;
}

.service-row:nth-child(1) { animation-delay: 0.1s; }
.service-row:nth-child(2) { animation-delay: 0.2s; }
.service-row:nth-child(3) { animation-delay: 0.3s; }
.service-row:nth-child(4) { animation-delay: 0.4s; }
.service-row:nth-child(5) { animation-delay: 0.5s; }

.summary-card {
    animation: fadeInUp 0.4s ease-out 0.3s both;
}

/* ===== TEXT VISIBILITY FIXES ===== */
body, body * {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6, p, span, div, li, a, button, option {
    opacity: 1 !important;
    visibility: visible !important;
}

/* ===== SCROLL BEHAVIOR ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--purple-primary);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--purple-secondary);
}