/**
 * CopyrightChains Portal - Main Stylesheet
 * Optimized modular CSS structure
 */

/* ============================================
   1. CSS Variables / Theme
   ============================================ */
:root {
    /* Brand Colors - Using SempreID theme */
    --nim-primary: #0674bb;
    --nim-primary-dark: #054d8a;
    --nim-primary-light: #3a92d0;
    --nim-secondary: #6C757D;
    --nim-accent: #28A745;
    --nim-danger: #DC3545;
    --nim-warning: #FFC107;
    --nim-info: #17A2B8;

    /* Neutral Colors */
    --white: #FFFFFF;
    --grey-100: #F8F9FA;
    --grey-200: #E9ECEF;
    --grey-300: #DEE2E6;
    --grey-400: #CED4DA;
    --grey-500: #ADB5BD;
    --grey-600: #6C757D;
    --grey-700: #495057;
    --grey-800: #343A40;
    --grey-900: #212529;
    --black: #000000;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Courier New', Courier, monospace;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 20px rgba(0,0,0,0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--grey-800);
    background: linear-gradient(135deg, var(--grey-100) 0%, var(--white) 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
    margin-top: 70px; /* Account for fixed header */
    margin-bottom: 100px; /* Account for fixed footer */
    padding: var(--spacing-xxl) var(--spacing-lg);
}

/* ============================================
   3. Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--spacing-md);
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-md);
}

code {
    font-family: var(--font-mono);
    background: var(--grey-200);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
}

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

.section {
    padding: var(--spacing-xxl) 0;
}

/* ============================================
   5. Header Styles
   ============================================ */
.unified-header {
    background: var(--white);
    border-bottom: 2px solid var(--nim-primary);
    padding: var(--spacing-lg) 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    height: 70px;
}

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

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--grey-900);
}

.header-date {
    color: var(--grey-600);
    font-size: 0.875rem;
}

/* ============================================
   6. Hero Section
   ============================================ */
.hero {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    margin-top: 90px; /* Account for fixed header */
    margin-bottom: var(--spacing-xxl);
}

.hero h2 {
    font-size: 2.5rem;
    color: var(--grey-900);
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.2rem;
    color: var(--grey-600);
    margin-bottom: var(--spacing-xl);
}

/* CTA Buttons */
.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.btn-primary, .btn-secondary {
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    transition: all 150ms ease;
    display: inline-block;
}

.btn-primary {
    background: var(--nim-primary);
    color: var(--white);
    border: 2px solid var(--nim-primary);
}

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

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

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

/* ============================================
   7. Feature Cards
   ============================================ */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin: var(--spacing-xxl) 0;
}

.feature {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform 150ms ease, box-shadow 150ms ease;
}

.feature:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature h3 {
    color: var(--nim-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1.3rem;
}

.feature p {
    color: var(--grey-600);
    line-height: 1.6;
}

/* ============================================
   8. Milestone Section
   ============================================ */
.milestone-section {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border: 2px solid var(--nim-primary);
    border-radius: 12px;
    padding: 2rem;
    margin: 2rem 0;
}

.milestone-title {
    color: var(--nim-primary);
    font-size: 2rem;
    margin-bottom: 1rem;
    text-align: center;
}

.milestone-content {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.milestone-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2rem;
    align-items: start;
}


/* ============================================
   9. Card Components
   ============================================ */
.card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card h2 {
    color: var(--nim-primary);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   10. Network Info Section
   ============================================ */
.network-info {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-xxl);
}

.network-info h3 {
    color: var(--grey-900);
    margin-bottom: var(--spacing-lg);
    font-size: 1.5rem;
}

/* ============================================
   11. Stats Grid
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.stat-card {
    background: var(--grey-100);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    text-align: center;
}

.stat-card h3 {
    font-size: 0.875rem;
    color: var(--grey-600);
    margin-bottom: var(--spacing-sm);
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--nim-primary);
}

/* ============================================
   12. Services Grid
   ============================================ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background: var(--white);
    border: 1px solid var(--grey-200);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: var(--nim-primary);
    box-shadow: var(--shadow-md);
}

.service-card.online {
    border-left: 4px solid var(--nim-accent);
}

.service-card.pending {
    border-left: 4px solid var(--nim-warning);
}

.status-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: var(--spacing-xs);
}

.status-online { background: var(--nim-accent); }
.status-pending { background: var(--nim-warning); }
.status-offline { background: var(--nim-danger); }

/* ============================================
   13. Contract List
   ============================================ */
.contracts-container h3 {
    color: var(--nim-primary);
    margin-bottom: var(--spacing-lg);
}

.contract-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--grey-200);
}

.contract-item:last-child {
    border-bottom: none;
}

.contract-name {
    font-weight: 500;
    color: var(--grey-800);
}

.contract-address {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.contract-address code {
    background: var(--grey-100);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

/* ============================================
   14. Buttons
   ============================================ */
button, .btn {
    background: var(--nim-primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

button:hover, .btn:hover {
    background: #0056b3;
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.copy-btn {
    background: var(--grey-600);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
}

.copy-btn.copied {
    background: var(--nim-accent);
}

/* ============================================
   15. Footer
   ============================================ */
.cc-footer {
    background: var(--white);
    border-top: 1px solid var(--grey-200);
    padding: var(--spacing-xl) 0;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    box-shadow: 0 -2px 4px rgba(0,0,0,0.05);
}

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

.cc-footer p {
    color: var(--grey-700);
    font-size: 0.9rem;
    margin: 0;
}

.cc-footer nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.cc-footer nav a {
    color: var(--grey-500);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
}

.cc-footer nav a:hover {
    color: var(--nim-primary);
    text-decoration: underline;
}

/* ============================================
   16. Loading & Error States
   ============================================ */
.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xxl);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--grey-300);
    border-top-color: var(--nim-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.error-message {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--nim-danger);
}

.error-message button {
    background: var(--nim-danger);
    margin-top: var(--spacing-md);
}

/* ============================================
   17. Notifications
   ============================================ */
.connection-status {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    color: var(--white);
    font-weight: 500;
    animation: slideIn var(--transition-base);
    z-index: 1000;
}

.connection-status.success {
    background: var(--nim-accent);
}

.connection-status.error {
    background: var(--nim-danger);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ============================================
   18. Responsive Design
   ============================================ */

/* Large screens (desktops) */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
}

/* Medium screens (tablets) */
@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }

    .features {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Small screens (tablets portrait & large phones) */
@media (max-width: 768px) {
    /* Typography adjustments */
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }

    /* Container adjustments */
    .container {
        max-width: 540px;
        padding: 0 var(--spacing-md);
    }

    /* Header responsive */
    .unified-header {
        padding: var(--spacing-md) 0;
        height: auto;
    }

    .header-container {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
        padding: 0 var(--spacing-md);
    }

    .header-logo {
        font-size: 1.1rem;
    }

    /* Main content adjustments */
    main {
        margin-top: 80px;
        margin-bottom: 120px;
        padding: var(--spacing-lg) var(--spacing-md);
    }

    /* Hero section responsive */
    .hero {
        padding: var(--spacing-lg);
        margin-top: 70px;
        margin-bottom: var(--spacing-lg);
    }

    .hero h2 {
        font-size: 1.75rem;
    }

    .hero p {
        font-size: 1rem;
    }

    /* Milestone section responsive */
    .milestone-section {
        padding: var(--spacing-md);
        margin: var(--spacing-md) 0;
    }

    .milestone-title {
        font-size: 1.5rem;
    }

    .milestone-content {
        padding: var(--spacing-md);
    }

    .milestone-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    /* Features grid responsive */
    .features {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .feature {
        padding: var(--spacing-md);
    }

    /* Stats grid responsive */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }

    /* Services grid responsive */
    .services-grid {
        grid-template-columns: 1fr;
    }

    /* Network info section */
    .network-info {
        padding: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }

    /* Contract list responsive */
    .contract-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }

    .contract-address {
        width: 100%;
    }

    .contract-address code {
        font-size: 0.75rem;
        word-break: break-all;
    }

    /* Footer responsive */
    .cc-footer {
        padding: var(--spacing-md) 0;
        height: auto;
        position: relative;
    }

    .cc-footer nav {
        gap: var(--spacing-sm);
    }

    .cc-footer nav a {
        font-size: 0.8rem;
        padding: var(--spacing-xs);
    }

    /* Cookie consent responsive */
    #cookieConsent {
        left: var(--spacing-sm);
        right: var(--spacing-sm);
        bottom: var(--spacing-sm);
        max-width: none;
    }

    .connection-status {
        left: var(--spacing-md);
        right: var(--spacing-md);
        bottom: var(--spacing-md);
    }
}

/* Extra small screens (phones) */
@media (max-width: 576px) {
    /* Typography for mobile */
    h1 { font-size: 1.75rem; }
    h2 { font-size: 1.35rem; }
    h3 { font-size: 1.15rem; }
    p { font-size: 0.95rem; }

    /* Container full width with padding */
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-sm);
    }

    /* Header adjustments */
    .header-logo img {
        height: 24px;
    }

    /* Main content spacing */
    main {
        padding: var(--spacing-md) var(--spacing-sm);
    }

    /* Hero mobile */
    .hero {
        padding: var(--spacing-md);
        border-radius: var(--radius-sm);
    }

    .hero h2 {
        font-size: 1.5rem;
        line-height: 1.3;
    }

    /* CTA buttons mobile */
    .cta-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    /* Stats grid mobile */
    .stats-grid {
        grid-template-columns: 1fr;
    }

    /* Services mobile */
    .service-card {
        padding: var(--spacing-md);
    }

    /* Footer mobile */
    .cc-footer p {
        font-size: 0.8rem;
        margin-bottom: var(--spacing-sm);
    }

    .cc-footer nav {
        flex-direction: column;
        gap: 2px;
    }

    .cc-footer nav a {
        display: inline-block;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* Very small screens (small phones) */
@media (max-width: 380px) {
    /* Further reduce font sizes */
    h1 { font-size: 1.5rem; }
    h2 { font-size: 1.25rem; }
    h3 { font-size: 1.1rem; }

    /* Minimal padding */
    .container {
        padding: 0 0.75rem;
    }

    /* Milestone grid adjustments */
    .milestone-content {
        padding: 0.75rem;
    }

    /* Reduce button padding */
    button, .btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
}

/* ============================================
   19. Print Styles
   ============================================ */
@media print {
    .unified-header,
    .unified-footer-simple,
    button,
    .copy-btn {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}