/* CSS Variables - Dark Theme */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-hover: #22222f;
    
    --text-primary: #e0e0e5;
    --text-secondary: #9090a0;
    --text-muted: #606070;
    
    --primary: #00ff9d;
    --primary-dim: rgba(0, 255, 157, 0.15);
    --accent: #00d4ff;
    --accent-dim: rgba(0, 212, 255, 0.15);
    
    --success: #00ff9d;
    --warning: #fbbf24;
    --danger: #ef4444;
    --info: #00d4ff;
    
    --border: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(0, 255, 157, 0.15);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Animated Background */
.app-container {
    position: relative;
    min-height: 100vh;
    overflow-x: hidden;
}

.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: glowPulse 8s ease-in-out infinite;
}

.glow-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    right: -100px;
    animation-delay: 0s;
}

.glow-2 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    bottom: -50px;
    left: -50px;
    animation-delay: 2s;
}

.glow-3 {
    width: 250px;
    height: 250px;
    background: #8b5cf6;
    top: 50%;
    left: 50%;
    animation-delay: 4s;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); }
}

/* Navigation */
.main-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: rgba(18, 18, 26, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.logo-icon svg {
    width: 20px;
    height: 20px;
    color: var(--bg-primary);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.nav-link svg {
    width: 18px;
    height: 18px;
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.user-name {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Nav user link - combined profile and username */
.nav-user-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

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

.nav-user-link svg {
    width: 18px;
    height: 18px;
}

/* Tariff badge in navigation */
.tariff-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.tariff-free {
    background: rgba(107, 114, 128, 0.2);
    color: #9ca3af;
}

.tariff-pro {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3), rgba(139, 92, 246, 0.3));
    color: #a5b4fc;
}

.tariff-team {
    background: linear-gradient(135deg, rgba(234, 179, 8, 0.3), rgba(249, 115, 22, 0.3));
    color: #fcd34d;
}

/* Upgrade button pulse animation for Free users */
.upgrade-pulse {
    animation: upgradePulse 2s ease-in-out infinite;
}

@keyframes upgradePulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(234, 179, 8, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(234, 179, 8, 0);
    }
}

/* Messages */
.messages-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 400px;
}

.message {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.875rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    animation: slideIn 0.3s ease;
}

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

.message-success { border-color: var(--success); background: rgba(0, 255, 157, 0.1); }
.message-error { border-color: var(--danger); background: rgba(239, 68, 68, 0.1); }
.message-warning { border-color: var(--warning); background: rgba(251, 191, 36, 0.1); }
.message-info { border-color: var(--info); background: rgba(0, 212, 255, 0.1); }

.message-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

/* Main Content */
.main-content {
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-sm {
    padding: 0.5rem 0.875rem;
    font-size: 0.8125rem;
}

.btn-sm svg {
    width: 16px;
    height: 16px;
}

.btn-full {
    width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--bg-primary);
    box-shadow: 0 4px 15px rgba(0, 255, 157, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 255, 157, 0.4);
}

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

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--border-light);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), var(--primary));
    color: var(--bg-primary);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

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

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

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

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

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

textarea.form-input {
    resize: vertical;
    min-height: 100px;
}

select.form-input {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%239090a0' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.form-error {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8125rem;
    color: var(--danger);
}

.form-hint {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.5);
}

.form-row {
    display: flex;
    gap: 1rem;
}

.form-row-2 > * {
    flex: 1;
}

/* Auth Pages */
.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 80px);
    padding: 2rem;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-lg);
}

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

.auth-logo {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.auth-logo svg {
    width: 32px;
    height: 32px;
    color: var(--bg-primary);
}

.auth-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--text-secondary);
}

.auth-form {
    margin-bottom: 1.5rem;
}

.auth-footer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header-left {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.page-title h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.page-title p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.page-actions {
    display: flex;
    gap: 0.75rem;
}

/* Host Cards */
.hosts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 1.5rem;
}

.host-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: all var(--transition-normal);
}

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

.host-header {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.host-icon {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.host-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary);
}

.host-info {
    flex: 1;
    min-width: 0;
}

.host-info h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.host-address {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.host-status {
    width: 12px;
    height: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    transition: all var(--transition-fast);
}

.host-status.testing .status-dot {
    animation: pulse 1s infinite;
    background: var(--warning);
}

.host-status.online .status-dot {
    background: var(--success);
    box-shadow: 0 0 8px var(--success);
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.host-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.25rem;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--border);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.meta-item svg {
    width: 14px;
    height: 14px;
}

.host-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    padding: 0.5rem;
}

.dropdown-menu {
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 0.5rem;
    min-width: 180px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-fast);
    z-index: 50;
}

.dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.875rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    background: none;
    border: none;
    width: 100%;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.dropdown-item svg {
    width: 16px;
    height: 16px;
}

.dropdown-item-danger:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
}

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    background: var(--bg-secondary);
    border: 1px dashed var(--border);
    border-radius: var(--radius-lg);
}

.empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.empty-icon svg {
    width: 40px;
    height: 40px;
    color: var(--text-muted);
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* Form Container */
.form-container {
    max-width: 640px;
    margin: 0 auto;
}

.host-form {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.form-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.form-section:last-of-type {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.form-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

/* Confirm Delete */
.confirm-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 200px);
}

.confirm-card {
    text-align: center;
    max-width: 420px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
}

.confirm-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.confirm-icon.danger {
    background: rgba(239, 68, 68, 0.15);
}

.confirm-icon svg {
    width: 32px;
    height: 32px;
    color: var(--danger);
}

.confirm-card h2 {
    margin-bottom: 0.75rem;
}

.confirm-card p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.confirm-card .text-muted {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.host-preview {
    margin: 1.5rem 0;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.confirm-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Sessions List */
.sessions-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.session-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-fast);
}

.session-card:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

.session-icon {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.session-icon svg {
    width: 20px;
    height: 20px;
    color: var(--primary);
}

.session-info {
    flex: 1;
    min-width: 0;
}

.session-info h3 {
    font-size: 0.9375rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.session-date {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.session-meta {
    text-align: right;
}

.message-count {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
}

.session-arrow {
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    flex-shrink: 0;
}

.session-card-container {
    position: relative;
}

.delete-form {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.session-card-container:hover .delete-form {
    opacity: 1;
}

.delete-btn {
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    background: var(--danger);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    transition: background var(--transition-fast);
}

.delete-btn:hover {
    background: #dc2626;
}

.delete-btn svg {
    width: 12px;
    height: 12px;
}

/* Utilities */
.text-muted {
    color: var(--text-muted);
}

.text-sm {
    font-size: 0.875rem;
}

/* Email Verification Status */
.email-status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    margin-left: 8px;
}

.email-verified {
    background: rgba(0, 255, 157, 0.15);
    color: var(--success);
}

.email-unverified {
    background: rgba(251, 191, 36, 0.15);
    color: var(--warning);
}

.email-verification-row {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.email-verification-row .btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* Responsive */
@media (max-width: 768px) {
    .main-content {
        padding: 1rem;
    }
    
    .hosts-grid {
        grid-template-columns: 1fr;
    }
    
    .page-header {
        flex-direction: column;
    }
    
    .host-actions {
        flex-wrap: wrap;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .auth-card {
        padding: 1.5rem;
    }
    
    .main-nav {
        padding: 1rem;
    }
    
    .nav-links {
        display: none;
    }
}