:root {
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-hover: #e8f5e9;
    --border: #c8e6c9;
    --border-subtle: #e0e0e0;
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #8888a0;
    --accent: #00c853;
    --accent-hover: #00b348;
    --accent-glow: rgba(0, 200, 83, 0.15);
    --accent-dim: #00e676;
    --danger: #ff1744;
    --danger-hover: #d50000;
    --success: #00c853;
    --warning: #ff9100;
    --terminal-bg: #0d1117;
    --terminal-text: #00ff41;
    --radius: 8px;
    --radius-lg: 12px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    font-size: 16px;
}

/* Navbar */
.navbar {
    background: var(--terminal-bg);
    border-bottom: 2px solid var(--accent);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 20px rgba(0, 200, 83, 0.1);
}

.nav-brand h1 {
    font-family: 'Fira Code', monospace;
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--terminal-text);
    text-shadow: 0 0 10px rgba(0, 255, 65, 0.3);
}

.nav-subtitle {
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    color: #5c8a6a;
    letter-spacing: 0.08em;
    font-weight: 400;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-link {
    color: #8b9fad;
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    transition: all 0.2s;
}

.nav-link:hover {
    color: var(--terminal-text);
    background: rgba(0, 255, 65, 0.08);
}

.nav-link.active {
    color: var(--terminal-text);
    background: rgba(0, 255, 65, 0.12);
    border: 1px solid rgba(0, 255, 65, 0.2);
}

.nav-link.logout {
    color: #ff6b6b;
}

.nav-link.logout:hover {
    background: rgba(255, 107, 107, 0.1);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 1px solid #2a3a3a;
}

.nav-username {
    font-family: 'Fira Code', monospace;
    font-size: 1rem;
    color: var(--accent-dim);
}

/* Container */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
}

/* Page Header */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
}

.page-header h2 {
    font-family: 'Fira Code', monospace;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
}

.page-header h2::before {
    content: '> ';
    color: var(--accent);
}

.page-actions {
    display: flex;
    gap: 0.5rem;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.card-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-subtle);
    background: var(--bg-primary);
}

.card-header h3 {
    font-family: 'Fira Code', monospace;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
}

.card-header h3::before {
    content: '# ';
    color: var(--accent);
}

.card-body {
    padding: 1.5rem;
}

.card-body.no-padding {
    padding: 0;
}

.card-actions {
    margin-top: 1.25rem;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.cards-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

/* IP Display */
.ip-display {
    font-size: 2.2rem;
    font-weight: 700;
    font-family: 'Fira Code', monospace;
    color: var(--accent);
    padding: 1rem 0;
    text-shadow: 0 0 20px var(--accent-glow);
}

/* Status */
.status-badge {
    display: inline-block;
    padding: 0.3rem 0.85rem;
    border-radius: 100px;
    font-family: 'Fira Code', monospace;
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.status-active {
    background: var(--accent-glow);
    color: #00802f;
    border: 1px solid rgba(0, 200, 83, 0.3);
}

.status-inactive {
    background: rgba(255, 23, 68, 0.08);
    color: var(--danger);
    border: 1px solid rgba(255, 23, 68, 0.2);
}

.status-details {
    margin-top: 1rem;
    font-size: 1rem;
    color: var(--text-secondary);
}

.status-details p {
    margin-bottom: 0.3rem;
}

.status-warning {
    margin-top: 0.75rem;
    padding: 0.75rem 1rem;
    background: rgba(255, 145, 0, 0.08);
    border: 1px solid rgba(255, 145, 0, 0.3);
    border-radius: var(--radius);
    color: #c67100;
    font-size: 1rem;
}

.status-hint {
    margin-top: 0.5rem;
    color: var(--text-muted);
    font-size: 1rem;
}

.status-dot {
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    margin-right: 0.3rem;
}

.status-dot.active {
    background: var(--success);
    box-shadow: 0 0 6px var(--success);
}

.status-dot.inactive {
    background: var(--danger);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.55rem 1.4rem;
    border: none;
    border-radius: var(--radius);
    font-family: 'Fira Code', monospace;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    line-height: 1.4;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 2px 8px rgba(0, 200, 83, 0.3);
}

.btn-primary:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 16px rgba(0, 200, 83, 0.4);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    background: var(--accent-glow);
}

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

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

.btn-sm {
    padding: 0.35rem 0.9rem;
    font-size: 0.95rem;
}

.btn-lg {
    padding: 0.8rem 2.2rem;
    font-size: 1.15rem;
}

.btn-full {
    width: 100%;
}

/* Tables */
.table-wrapper {
    overflow-x: auto;
}

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

.table th {
    text-align: left;
    padding: 0.85rem 1.5rem;
    font-family: 'Fira Code', monospace;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 2px solid var(--border-subtle);
    background: var(--bg-primary);
}

.table td {
    padding: 0.85rem 1.5rem;
    font-size: 1rem;
    border-bottom: 1px solid #f0f0f0;
}

.table tbody tr:hover {
    background: var(--bg-hover);
}

.table code {
    font-family: 'Fira Code', monospace;
    background: var(--terminal-bg);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-size: 0.95rem;
    color: var(--terminal-text);
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem !important;
    font-size: 1rem;
}

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

.form-group label {
    display: block;
    font-family: 'Fira Code', monospace;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="email"] {
    width: 100%;
    padding: 0.7rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-inline-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr auto auto;
    gap: 1rem;
    align-items: end;
}

.form-check-group {
    display: flex;
    align-items: center;
}

.check-label {
    display: flex !important;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    text-transform: none !important;
    font-size: 0.95rem !important;
}

.input-sm {
    padding: 0.4rem 0.85rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
}

.input-sm:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Login */
.login-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 200, 83, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(0, 200, 83, 0.04) 0%, transparent 50%),
        var(--bg-primary);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-top: 3px solid var(--accent);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-family: 'Fira Code', monospace;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.login-header .subtitle {
    font-family: 'Fira Code', monospace;
    font-size: 0.95rem;
    color: var(--accent);
    letter-spacing: 0.08em;
}

.login-form .btn {
    margin-top: 0.5rem;
}

.login-footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    text-align: center;
    padding: 1.5rem 2rem;
    margin-top: 2rem;
    border-top: 1px solid var(--border-subtle);
}

.footer-text {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.footer-text strong {
    color: var(--accent);
    font-weight: 600;
}

/* Flash messages */
.flash-messages {
    margin-bottom: 1.5rem;
}

.flash {
    padding: 0.8rem 1.2rem;
    border-radius: var(--radius);
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.flash-success {
    background: var(--accent-glow);
    border: 1px solid rgba(0, 200, 83, 0.3);
    color: #00802f;
}

.flash-error {
    background: rgba(255, 23, 68, 0.08);
    border: 1px solid rgba(255, 23, 68, 0.25);
    color: #c41230;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--accent);
    text-decoration: none;
    font-family: 'Fira Code', monospace;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb-sep {
    color: var(--text-muted);
}

.breadcrumb-current {
    color: var(--text-primary);
    font-family: 'Fira Code', monospace;
    font-weight: 500;
}

/* File manager */
.file-actions-bar {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.newfolder-form {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.upload-label {
    cursor: pointer;
}

.file-table .file-link {
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
}

.file-table .file-link:hover {
    color: var(--accent);
}

.file-icon {
    font-size: 1.1rem;
    width: 1.5rem;
    text-align: center;
}

.col-size,
.col-date {
    color: var(--text-muted);
    font-family: 'Fira Code', monospace;
    font-size: 0.95rem;
    white-space: nowrap;
}

.col-actions {
    white-space: nowrap;
    display: flex;
    gap: 0.25rem;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        height: auto;
        padding: 0.75rem 1rem;
        gap: 0.5rem;
    }

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

    .container {
        padding: 1rem;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .form-inline-grid {
        grid-template-columns: 1fr;
    }

    .page-header {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }

    .ip-display {
        font-size: 1.6rem;
    }
}