/**
 * Qubix Mail - CSS Стили
 * Тёмная тема с палитрой проекта
 */

/* ==================== CSS ПЕРЕМЕННЫЕ ==================== */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #141414;
    --bg-card: #181818;
    --bg-card-hover: #1c1c1c;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --text-muted: #555555;
    --accent: #ffffff;
    --border: #222222;
    --border-light: #2a2a2a;
    --input-border: #252525;
    --error: #ef4444;
    --success: #22c55e;
    --placeholder: #666666;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
    
    --transition: all 0.2s ease;
}

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

html, body {
    height: 100%;
}

body {
    font-family: 'Unbounded', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    opacity: 0.8;
}

/* ==================== UTILITIES ==================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }

.text-center { text-align: center; }
.text-sm { font-size: 0.875rem; }
.text-xs { font-size: 0.75rem; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-error { color: var(--error); }
.text-success { color: var(--success); }

.hidden { display: none !important; }

/* ==================== AUTH PAGE ==================== */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: 
        radial-gradient(ellipse at top, rgba(255,255,255,0.02) 0%, transparent 50%),
        var(--bg-primary);
}

.auth-container {
    width: 100%;
    max-width: 420px;
}

.auth-logo {
    text-align: center;
    margin-bottom: 40px;
}

.auth-logo h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 8px;
}

.auth-logo p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow);
}

.auth-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 32px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-md);
}

.auth-tab {
    flex: 1;
    padding: 12px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.auth-tab:hover {
    color: var(--text-primary);
}

.auth-tab.active {
    background: var(--bg-card);
    color: var(--text-primary);
}

/* ==================== FORMS ==================== */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

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

.input-suffix {
    display: flex;
    align-items: stretch;
}

.input-suffix .form-input {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: none;
}

.input-suffix-text {
    display: flex;
    align-items: center;
    padding: 0 16px;
    background: var(--bg-card-hover);
    border: 1px solid var(--input-border);
    border-left: none;
    border-top-right-radius: var(--radius-sm);
    border-bottom-right-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-primary {
    width: 100%;
    background: var(--text-primary);
    color: var(--bg-primary);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--bg-card-hover);
    border-color: var(--border-light);
}

.btn-danger {
    background: transparent;
    color: var(--error);
    border: 1px solid var(--error);
}

.btn-danger:hover:not(:disabled) {
    background: var(--error);
    color: white;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px 12px;
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-sm);
}

/* ==================== MESSAGES ==================== */
.message {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 0.9rem;
    display: none;
}

.message.show {
    display: block;
}

.message-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--error);
}

.message-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: var(--success);
}

/* ==================== APP LAYOUT ==================== */
.app-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 24px;
    display: flex;
    flex-direction: column;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.sidebar-logo h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.sidebar-logo .icon {
    width: 40px;
    height: 40px;
    background: var(--text-primary);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.sidebar-user {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 24px;
}

.sidebar-user-email {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 4px;
    word-break: break-all;
}

.sidebar-user-stats {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.sidebar-nav {
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
    cursor: pointer;
}

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

.nav-item.active {
    background: var(--bg-card);
    color: var(--text-primary);
}

.nav-item .badge {
    margin-left: auto;
    background: var(--error);
    color: white;
    padding: 2px 8px;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.sidebar-footer {
    border-top: 1px solid var(--border);
    padding-top: 16px;
}

/* ==================== MAIN CONTENT ==================== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.main-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.main-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.main-body {
    flex: 1;
    overflow-y: auto;
    padding: 24px 32px;
}

/* ==================== EMAIL LIST ==================== */
.email-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.email-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
}

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

.email-item.unread {
    border-left: 3px solid var(--accent);
}

.email-item.unread .email-subject {
    font-weight: 600;
}

.email-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.email-content {
    flex: 1;
    min-width: 0;
}

.email-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 4px;
}

.email-from {
    font-size: 0.95rem;
    font-weight: 500;
}

.email-date {
    font-size: 0.8rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

.email-subject {
    font-size: 0.9rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.empty-state {
    text-align: center;
    padding: 80px 24px;
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 24px;
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--text-secondary);
}

/* ==================== EMAIL VIEW ==================== */
.email-view {
    max-width: 800px;
}

.email-view-header {
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
}

.email-view-subject {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    word-break: break-word;
}

.email-view-meta {
    display: flex;
    align-items: center;
    gap: 16px;
}

.email-view-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.email-view-from {
    flex: 1;
}

.email-view-from-name {
    font-weight: 500;
    margin-bottom: 2px;
}

.email-view-from-email {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.email-view-date {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.email-view-body {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    min-height: 200px;
    line-height: 1.7;
}

.email-view-body img {
    max-width: 100%;
    height: auto;
}

.email-view-body a {
    color: var(--accent);
    text-decoration: underline;
}

.email-actions {
    display: flex;
    gap: 8px;
}

/* ==================== LOADING ==================== */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 10, 10, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .app-layout {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border);
        padding: 16px;
    }
    
    .sidebar-logo {
        margin-bottom: 16px;
        padding-bottom: 16px;
    }
    
    .main-header {
        padding: 16px;
    }
    
    .main-body {
        padding: 16px;
    }
    
    .auth-card {
        padding: 24px;
    }
}