/* ========================================
   БКИ - Космический дизайн
   ======================================== */

:root {
    --bg-deep: #0a0a0f;
    --bg-dark: #0d0d14;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a25;

    --border: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(138, 43, 226, 0.3);

    --text: #e8e8f0;
    --text-muted: #8888a0;
    --text-bright: #ffffff;

    --primary: #8a2be2;
    --primary-glow: rgba(138, 43, 226, 0.4);
    --primary-light: #a855f7;

    --accent: #06b6d4;
    --accent-glow: rgba(6, 182, 212, 0.3);

    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    --gradient-1: linear-gradient(135deg, #8a2be2 0%, #06b6d4 100%);
    --gradient-2: linear-gradient(180deg, rgba(138, 43, 226, 0.15) 0%, transparent 100%);

    --radius: 12px;
    --radius-lg: 20px;
}

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

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

/* Animated stars background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(2px 2px at 20px 30px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255,255,255,0.4), transparent),
        radial-gradient(2px 2px at 130px 80px, rgba(255,255,255,0.2), transparent),
        radial-gradient(1px 1px at 160px 120px, rgba(255,255,255,0.3), transparent),
        radial-gradient(2px 2px at 200px 50px, rgba(138,43,226,0.4), transparent),
        radial-gradient(1px 1px at 250px 160px, rgba(255,255,255,0.2), transparent),
        radial-gradient(2px 2px at 300px 90px, rgba(6,182,212,0.3), transparent);
    background-size: 350px 200px;
    animation: twinkle 8s ease-in-out infinite;
    pointer-events: none;
    z-index: 0;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(20px);
    background: rgba(10, 10, 15, 0.8);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-bright);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    background: var(--gradient-1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s;
}

.nav a:hover {
    color: var(--text-bright);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--primary-glow);
}

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

.btn-outline:hover {
    background: var(--bg-card);
    border-color: var(--primary);
}

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

.btn-accent {
    background: var(--accent);
    color: white;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 17px;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all 0.3s ease;
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    box-shadow: 0 10px 40px rgba(138, 43, 226, 0.1);
}

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

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 15px;
    transition: all 0.3s;
}

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

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

.form-hint {
    margin-top: 6px;
    font-size: 13px;
    color: var(--text-muted);
}

/* Auth pages */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
}

.auth-title {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-bright);
}

.auth-subtitle {
    color: var(--text-muted);
    margin-bottom: 32px;
}

.auth-footer {
    margin-top: 24px;
    text-align: center;
    color: var(--text-muted);
}

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

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

/* Dashboard */
.dashboard {
    padding: 40px 0;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.page-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-bright);
    margin-bottom: 8px;
}

.page-subtitle {
    color: var(--text-muted);
}

/* Channels grid */
.channels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
}

.channel-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s;
}

.channel-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.channel-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--gradient-2);
}

.channel-name {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-bright);
}

.channel-status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.channel-status.connected {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.channel-status.pending {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.channel-body {
    padding: 24px;
}

.channel-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 20px;
}

.channel-info-item {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
}

.channel-info-label {
    color: var(--text-muted);
}

.channel-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    padding: 20px;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.3s;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

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

.modal-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-bright);
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg-dark);
    border-radius: 50%;
    color: var(--text-muted);
    font-size: 20px;
    cursor: pointer;
    transition: all 0.3s;
}

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Topic tags */
.topic-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.topic-tag {
    padding: 6px 14px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--text);
}

.topic-tag:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Time slots */
.time-slots {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.time-slot {
    padding: 6px 14px;
    background: var(--gradient-1);
    border-radius: 8px;
    font-size: 13px;
    color: white;
}

/* Empty state */
.empty-state {
    text-align: center;
    padding: 80px 40px;
    background: var(--bg-card);
    border: 1px dashed var(--border);
    border-radius: var(--radius-lg);
}

.empty-state h3 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--text-bright);
}

.empty-state p {
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* Alerts */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 16px;
}

.alert-success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--success);
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger);
}

.alert-info {
    background: rgba(6, 182, 212, 0.15);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--accent);
}

/* Loading */
.loading {
    display: flex;
    justify-content: center;
    padding: 60px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Glow effects */
.glow-text {
    text-shadow: 0 0 20px var(--primary-glow);
}

.glow-box {
    box-shadow: 0 0 30px var(--primary-glow);
}

/* Hero section */
.hero {
    padding: 100px 0;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero-title {
    font-size: 56px;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--text-bright);
    position: relative;
}

.hero-title span {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
    position: relative;
}

/* Features */
.features {
    padding: 80px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    transition: all 0.3s;
}

.feature-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-8px);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 20px;
}

.feature-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-bright);
}

.feature-desc {
    color: var(--text-muted);
    font-size: 14px;
}

/* Bot instructions */
.bot-instructions {
    margin-top: 24px;
    padding: 20px;
    background: rgba(138, 43, 226, 0.08);
    border: 1px solid rgba(138, 43, 226, 0.2);
    border-radius: var(--radius);
}

.bot-instructions h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-bright);
    margin-bottom: 16px;
}

.bot-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    padding: 12px 16px;
    background: var(--bg-dark);
    border-radius: 8px;
}

.bot-label {
    color: var(--text-muted);
    font-size: 14px;
}

.bot-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    transition: all 0.3s;
}

.bot-link:hover {
    color: var(--primary-light);
    text-shadow: 0 0 10px var(--accent-glow);
}

.instruction-list {
    margin: 0;
    padding-left: 20px;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
}

.instruction-list li {
    margin-bottom: 6px;
}

.instruction-list li:last-child {
    margin-bottom: 0;
}

.instruction-list strong {
    color: var(--text);
}

.instruction-list a {
    color: var(--accent);
    text-decoration: none;
}

.instruction-list a:hover {
    text-decoration: underline;
}

/* Topic Categories Grid */
.topic-categories {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 16px;
}

.topic-category {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 8px;
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s;
}

.topic-category:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary);
    transform: translateY(-2px);
}

.topic-category.selected {
    background: rgba(138, 43, 226, 0.15);
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
}

.topic-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.topic-name {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    text-align: center;
}

.topic-category.selected .topic-name {
    color: var(--text-bright);
}

.selected-topic-text {
    text-align: center;
    padding: 8px;
    background: var(--bg-dark);
    border-radius: 8px;
    margin-top: 12px;
}

.custom-topic-wrapper {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.custom-topic-wrapper .form-label {
    margin-bottom: 8px;
    color: var(--text-muted);
    font-size: 13px;
}

.custom-topic-wrapper .form-input {
    background: var(--bg-card);
    border: 1px dashed var(--border);
}

.custom-topic-wrapper .form-input:focus {
    border-style: solid;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Topic textarea */
.topic-textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

/* Posts per hour selector */
.posts-per-hour-selector {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px;
    margin-top: 12px;
}

.posts-option {
    padding: 18px 12px;
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
}

.posts-option:hover {
    border-color: var(--primary);
    background: var(--bg-card-hover);
    transform: scale(1.05);
}

.posts-option.selected {
    background: var(--gradient-1);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 20px var(--primary-glow);
    transform: scale(1.05);
}

/* Селектор периода поиска */
.search-period-selector {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
}

.period-option {
    padding: 12px 18px;
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

.period-option:hover {
    border-color: var(--primary);
    background: var(--bg-card-hover);
}

.period-option.selected {
    background: var(--gradient-1);
    border-color: transparent;
    color: white;
    box-shadow: 0 4px 15px var(--primary-glow);
}

/* Мультиселектор часов публикации */
.hours-picker {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 8px;
    margin-top: 12px;
}

.hour-option {
    padding: 10px 6px;
    background: var(--bg-dark);
    border: 2px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    text-align: center;
    transition: all 0.3s;
}

.hour-option:hover {
    border-color: var(--primary);
    background: var(--bg-card-hover);
}

.hour-option.selected {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 2px 10px var(--primary-glow);
}

/* Селектор часового пояса */
.timezone-select {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238888a0' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.timezone-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.timezone-select option {
    background: var(--bg-card);
    color: var(--text);
    padding: 10px;
}

.timezone-detected {
    color: var(--success);
    font-size: 12px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

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

    .page-header {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .nav {
        gap: 16px;
    }

    .hours-picker {
        grid-template-columns: repeat(4, 1fr);
    }

    .search-period-selector {
        justify-content: center;
    }

    .period-option {
        padding: 10px 14px;
        font-size: 13px;
    }
}