/* CopyrightChains Unified Theme - Light Professional Design */

:root {
    /* Primary Colors */
    --primary: #0674bb;
    --primary-hover: #055a99;
    --primary-light: #e6f2fa;

    /* Background Colors - Light Theme */
    --bg-white: #ffffff;
    --bg-light: #f8f9fa;
    --bg-grey: #e9ecef;
    --bg-section: #f5f7fa;

    /* Text Colors */
    --text-primary: #212529;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    --text-white: #ffffff;

    /* Border & Shadows */
    --border: #dee2e6;
    --border-light: #e9ecef;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);

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

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-white);
    line-height: 1.6;
}

/* Unified Header Styles */
.unified-header {
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.header-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.25rem;
}

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

.header-nav {
    display: flex;
    gap: var(--spacing-md);
    margin-left: auto;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-link:hover {
    background-color: var(--bg-light);
    color: var(--primary);
}

.nav-link.active {
    background-color: var(--primary-light);
    color: var(--primary);
}

/* Simple Footer Styles */
.unified-footer-simple {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #ffffff !important;
    border-top: 1px solid #dee2e6;
    padding: var(--spacing-lg) 0;
    text-align: center;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.unified-footer-simple p {
    color: #6c757d;
    font-size: 0.95rem;
    margin: 0;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .header-nav {
        flex-wrap: wrap;
        justify-content: center;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* Utility Classes */
.text-primary { color: var(--primary); }
.bg-light { background-color: var(--bg-light); }
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ================================
   Loading Indicators & Feedback
   ================================ */

.loading-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid var(--primary, #0066cc);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
    vertical-align: middle;
}

.loading-spinner.active {
    display: inline-block;
}

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

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-overlay.active {
    display: flex;
}

.loading-content {
    background: white;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.loading-content .spinner-large {
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid var(--primary, #0066cc);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.loading-text {
    color: #333;
    font-size: 16px;
    margin-top: 10px;
}

/* Button loading states */
button.loading {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

button.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Progress indicator */
.progress-indicator {
    width: 100%;
    height: 4px;
    background: #f3f3f3;
    border-radius: 2px;
    overflow: hidden;
    margin: 20px 0;
}

.progress-bar {
    height: 100%;
    background: var(--primary, #0066cc);
    border-radius: 2px;
    transition: width 0.3s ease;
    animation: progress-pulse 2s ease-in-out infinite;
}

@keyframes progress-pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}