/* Minimal Soft White Theme - Solana Staking Platform */

:root {
    --primary: #4A90E2;
    --primary-light: #6BA3E8;
    --primary-dark: #357ABD;
    --white: #FFFFFF;
    --off-white: #FAFBFC;
    --light-gray: #F5F7FA;
    --gray: #E1E8ED;
    --text-primary: #2C3E50;
    --text-secondary: #7F8C9A;
    --text-muted: #95A5A6;
    --success: #27AE60;
    --warning: #F39C12;
    --danger: #E74C3C;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.2s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background: var(--off-white);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--white);
    border-bottom: 1px solid var(--gray);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.75rem 0;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    cursor: pointer;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 700;
}

/* Navigation */
nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    padding: 0.5rem 0;
}

nav a:hover,
nav a.active {
    color: var(--primary);
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Wallet Button */
.wallet-btn {
    background: var(--primary);
    color: var(--white);
    padding: 0.6rem 1.25rem;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.wallet-btn:hover {
    background: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

.wallet-connected {
    background: var(--white);
    color: var(--primary);
    border: 1.5px solid var(--primary);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero p {
    font-size: clamp(1rem, 2vw, 1.125rem);
    max-width: 700px;
    margin: 0 auto 2rem;
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Cards */
.card {
    background: var(--white);
    border: 1px solid var(--gray);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--light-gray);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin: 2rem 0;
}

.stat-card {
    background: var(--white);
    border: 1px solid var(--gray);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
}

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

.stat-icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    color: var(--primary);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.stat-change {
    font-size: 0.8rem;
    font-weight: 500;
}

.stat-change.positive { color: var(--success); }
.stat-change.negative { color: var(--danger); }

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary);
    border: 1.5px solid var(--primary);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--light-gray);
}

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

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

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

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 3rem 0;
}

.feature-card {
    text-align: center;
    padding: 2rem 1.5rem;
    background: var(--white);
    border: 1px solid var(--gray);
    border-radius: var(--radius-md);
    transition: var(--transition);
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    background: var(--light-gray);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 1.75rem;
}

.feature-card h3 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Table */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray);
    background: var(--white);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--light-gray);
}

th {
    padding: 1rem 0.75rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: 1rem 0.75rem;
    border-bottom: 1px solid var(--light-gray);
    font-size: 0.9rem;
}

tbody tr:hover {
    background: var(--off-white);
}

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

/* Badge */
.badge {
    display: inline-flex;
    padding: 0.3rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.badge-success {
    background: #E8F5E9;
    color: var(--success);
}

.badge-warning {
    background: #FFF3E0;
    color: var(--warning);
}

.badge-danger {
    background: #FFEBEE;
    color: var(--danger);
}

/* Form */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9rem;
}

input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--white);
    border: 1.5px solid var(--gray);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    max-width: 480px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-lg);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: var(--light-gray);
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--danger);
    color: var(--white);
}

/* Alert */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    font-size: 0.9rem;
}

.alert-success {
    background: #E8F5E9;
    border: 1px solid var(--success);
    color: #1B5E20;
}

.alert-warning {
    background: #FFF3E0;
    border: 1px solid var(--warning);
    color: #E65100;
}

.alert-danger {
    background: #FFEBEE;
    border: 1px solid var(--danger);
    color: #B71C1C;
}

/* Spinner */
.spinner {
    border: 2px solid var(--light-gray);
    border-top: 2px solid var(--primary);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    animation: spin 0.8s linear infinite;
    margin: 1.5rem auto;
}

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

/* Footer */
footer {
    background: var(--white);
    border-top: 1px solid var(--gray);
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text-primary);
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--light-gray);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Mobile Bottom Nav */
.mobile-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--gray);
    padding: 0.5rem 0;
    z-index: 999;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

.mobile-bottom-nav ul {
    display: flex;
    justify-content: space-around;
    list-style: none;
}

.mobile-bottom-nav a {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 500;
    padding: 0.5rem;
}

.mobile-bottom-nav a.active,
.mobile-bottom-nav a:hover {
    color: var(--primary);
}

.nav-icon {
    font-size: 1.25rem;
}

/* Responsive - Modern Mobile & Desktop */
@media (max-width: 768px) {
    body {
        font-size: 14px;
        padding-bottom: 70px;
    }
    
    .container {
        padding: 0 16px;
    }
    
    /* Hide desktop nav on mobile */
    header nav {
        display: none !important;
    }
    
    .mobile-menu-toggle {
        display: block;
    }
    
    /* Modern mobile bottom nav */
    .mobile-bottom-nav {
        display: block !important;
        background: var(--white);
        border-top: 1px solid var(--gray);
        box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.08);
    }
    
    .mobile-bottom-nav ul {
        display: flex;
        justify-content: space-around;
        padding: 0.5rem 0;
    }
    
    .mobile-bottom-nav a {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
        padding: 0.5rem 0.75rem;
        color: var(--text-secondary);
        font-size: 0.7rem;
        font-weight: 600;
        transition: all 0.2s ease;
        border-radius: var(--radius-sm);
    }
    
    .mobile-bottom-nav a.active {
        color: var(--primary);
        background: rgba(74, 144, 226, 0.1);
    }
    
    .mobile-bottom-nav .nav-icon {
        font-size: 1.4rem;
    }
    
    /* Mobile optimizations */
    .logo {
        font-size: 1.1rem;
    }
    
    .logo-icon {
        width: 32px;
        height: 32px;
        font-size: 1.1rem;
    }
    
    .wallet-btn {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
    }
    
    main {
        padding-bottom: 80px;
    }
    
    .hero {
        padding: 2rem 0;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .stats-grid,
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .card {
        padding: 1.25rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
    
    .table-container {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    table {
        min-width: 600px;
    }
    
    th, td {
        padding: 0.75rem 0.5rem;
        font-size: 0.85rem;
    }
    
    .btn {
        padding: 0.65rem 1.25rem;
        font-size: 0.85rem;
    }
}

/* Desktop enhancements */
@media (min-width: 769px) {
    .mobile-bottom-nav {
        display: none !important;
    }
    
    nav a::before {
        content: '';
        position: absolute;
        bottom: -2px;
        left: 50%;
        transform: translateX(-50%);
        width: 0;
        height: 2px;
        background: var(--primary);
        transition: width 0.3s ease;
    }
    
    nav a:hover::before,
    nav a.active::before {
        width: 100%;
    }
    
    .card:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    }
    
    .stat-card:hover {
        transform: translateY(-4px) scale(1.02);
        box-shadow: 0 8px 24px rgba(74, 144, 226, 0.15);
    }
    
    .btn:hover:not(:disabled) {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(74, 144, 226, 0.3);
    }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }