/* ===== VARIABLES ===== */
:root {
    --primary-blue: #1a237e;
    --secondary-blue: #3949ab;
    --light-blue: #e8eaf6;
    --success-color: #2e7d32;
    --error-color: #c62828;
    --warning-color: #f57c00;
    --running-color: #4caf50;
    --stopped-color: #f44336;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --medium-gray: #e0e0e0;
    --dark-gray: #424242;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f8f9fa;
    color: #333;
    line-height: 1.6;
}

/* ===== NAVBAR ===== */
.navbar {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: var(--white);
    padding: 0 20px;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 15px;
}

.nav-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.brand-text {
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.1);
    padding: 8px 15px;
    border-radius: 50px;
}

.user-icon {
    font-size: 1.2rem;
}

.btn-logout {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* ===== MAIN CONTENT ===== */
.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
}

.container {
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

/* ===== DASHBOARD HEADER ===== */
.dashboard-header {
    padding: 30px;
    background: linear-gradient(135deg, var(--light-blue) 0%, #f3f4f9 100%);
    border-bottom: 1px solid var(--medium-gray);
}

.dashboard-header h1 {
    color: var(--primary-blue);
    font-size: 2.2rem;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.header-subtitle {
    color: var(--dark-gray);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

/* ===== STATS ===== */
.stats-container {
    display: flex;
    gap: 25px;
    flex-wrap: wrap;
}

.stat-card {
    flex: 1;
    min-width: 200px;
    background: var(--white);
    border-radius: 12px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.stat-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    background: var(--light-blue);
    color: var(--primary-blue);
}

.stat-icon.running {
    background: rgba(76, 175, 80, 0.1);
    color: var(--running-color);
}

.stat-icon.stopped {
    background: rgba(244, 67, 54, 0.1);
    color: var(--stopped-color);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    line-height: 1;
}

.stat-label {
    color: var(--dark-gray);
    font-size: 0.95rem;
    margin-top: 5px;
}

/* ===== SECTION HEADER ===== */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding: 0 30px;
    padding-top: 30px;
}

.section-header h2 {
    color: var(--primary-blue);
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-actions {
    display: flex;
    gap: 15px;
    align-items: center;
}

.search-box {
    position: relative;
}

.search-box i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--dark-gray);
}

.search-box input {
    padding: 12px 15px 12px 45px;
    border: 2px solid var(--medium-gray);
    border-radius: 8px;
    font-size: 1rem;
    width: 250px;
    transition: all 0.3s ease;
}

.search-box input:focus {
    outline: none;
    border-color: var(--secondary-blue);
}

.btn-refresh {
    background: var(--secondary-blue);
    color: var(--white);
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-refresh:hover {
    background: var(--primary-blue);
}

/* ===== LOADING STATES ===== */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px;
    color: var(--dark-gray);
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid var(--light-blue);
    border-radius: 50%;
    border-top-color: var(--primary-blue);
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

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

.empty-state, .error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px;
    text-align: center;
    color: var(--dark-gray);
}

.empty-state i, .error-state i {
    font-size: 4rem;
    margin-bottom: 20px;
    color: var(--medium-gray);
}

.error-state i {
    color: var(--error-color);
}

.empty-state h3, .error-state h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.error-state h3 {
    color: var(--error-color);
}

.btn-retry {
    background: var(--secondary-blue);
    color: var(--white);
    border: none;
    padding: 12px 25px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 20px;
}

.btn-retry:hover {
    background: var(--primary-blue);
}

.hidden {
    display: none !important;
}

/* ===== VPS GRID ===== */
.vps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
    padding: 0 30px 40px;
}

.vps-card {
    background: var(--white);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--medium-gray);
    transition: all 0.3s ease;
}

.vps-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.vps-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.vps-name {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 5px;
}

.vps-id {
    color: var(--dark-gray);
    font-size: 0.9rem;
    font-family: monospace;
    background: var(--light-gray);
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 5px;
}

.vps-plan {
    color: var(--dark-gray);
    font-size: 0.9rem;
    margin-top: 5px;
}

.vps-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-running {
    background: rgba(76, 175, 80, 0.15);
    color: var(--running-color);
}

.status-stopped {
    background: rgba(244, 67, 54, 0.15);
    color: var(--stopped-color);
}

.status-starting {
    background: rgba(255, 152, 0, 0.15);
    color: var(--warning-color);
}

.status-stopping {
    background: rgba(255, 152, 0, 0.15);
    color: var(--warning-color);
}

.status-restarting {
    background: rgba(33, 150, 243, 0.15);
    color: var(--secondary-blue);
}

.status-error {
    background: rgba(244, 67, 54, 0.15);
    color: var(--error-color);
}

.status-pending {
    background: rgba(156, 39, 176, 0.15);
    color: #9c27b0;
}

.status-unknown {
    background: rgba(117, 117, 117, 0.15);
    color: #757575;
}

.vps-details {
    margin-bottom: 20px;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--medium-gray);
}

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

.detail-label {
    color: var(--dark-gray);
    font-weight: 500;
}

.detail-value {
    color: var(--primary-blue);
    font-weight: 600;
    text-align: right;
}

/* ===== FOOTER ===== */
.dashboard-footer {
    padding: 20px 30px;
    border-top: 1px solid var(--medium-gray);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--primary-blue);
    font-weight: 600;
}

.footer-logo {
    width: 30px;
    height: 30px;
    object-fit: contain;
}

.api-credit {
    font-style: italic;
    color: var(--secondary-blue);
    margin-top: 5px;
}

.session-info {
    margin-top: 5px;
    font-size: 0.85rem;
    color: var(--dark-gray);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-user {
        width: 100%;
        justify-content: space-between;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .section-actions {
        width: 100%;
    }
    
    .search-box input {
        width: 100%;
    }
    
    .vps-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
}

/* ===== VPS CARD ===== */
.vps-hostname {
    color: var(--dark-gray);
    font-size: 0.8rem;
    margin-top: 3px;
    font-family: monospace;
    background: #f0f0f0;
    padding: 2px 6px;
    border-radius: 3px;
    display: inline-block;
}

/* ===== VPS DETAILS ===== */
.vps-details {
    margin-bottom: 20px;
    background: #f9f9f9;
    padding: 15px;
    border-radius: 8px;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    padding-bottom: 10px;
    border-bottom: 1px dashed var(--medium-gray);
}

.detail-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.detail-label {
    color: var(--dark-gray);
    font-weight: 500;
    font-size: 0.9rem;
}

.detail-value {
    color: var(--primary-blue);
    font-weight: 600;
    text-align: right;
    font-size: 0.9rem;
    max-width: 60%;
    word-break: break-word;
}

/* ===== VPS CARD HEADER ===== */
.vps-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

.vps-name {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 5px;
    word-break: break-word;
}

.vps-id {
    color: var(--dark-gray);
    font-size: 0.85rem;
    font-family: monospace;
    background: var(--light-gray);
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
    margin-bottom: 5px;
}

.vps-plan {
    color: #2196F3;
    font-size: 0.9rem;
    margin-top: 5px;
    font-weight: 500;
    background: rgba(33, 150, 243, 0.1);
    padding: 2px 8px;
    border-radius: 4px;
    display: inline-block;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .vps-card-header {
        flex-direction: column;
    }
    
    .vps-status {
        align-self: flex-start;
        margin-top: 10px;
    }
    
    .detail-item {
        flex-direction: column;
        gap: 5px;
    }
    
    .detail-value {
        text-align: left;
        max-width: 100%;
    }
}