/* ==========================================================================
   YOUTUBE SEO STUDIO - ESTILOS VISUAIS SAAS PROFISSIONAL
   Design System Moderno, Dark Mode Elegante, Responsivo e Otimizado
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --bg-main: #0a0f1d;
    --bg-surface: #111827;
    --bg-surface-elevated: #1a233a;
    --bg-card: rgba(23, 32, 54, 0.75);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: #6366f1;
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.25);

    --accent-red: #ff2d55;
    --accent-youtube: #ff0000;
    --accent-purple: #a855f7;
    --accent-cyan: #06b6d4;
    --accent-emerald: #10b981;
    --accent-amber: #f59e0b;

    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-light: #ffffff;

    --sidebar-width: 260px;
    --topbar-height: 70px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.45);
    --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 15% 15%, rgba(99, 102, 241, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 85% 85%, rgba(255, 45, 85, 0.05) 0%, transparent 40%);
    background-attachment: fixed;
}

/* ==========================================================================
   TIPOGRAFIA & UTILITÁRIOS
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.25;
}

h1 { font-size: 1.85rem; letter-spacing: -0.02em; }
h2 { font-size: 1.45rem; letter-spacing: -0.015em; }
h3 { font-size: 1.15rem; }

p { color: var(--text-secondary); font-size: 0.95rem; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: #818cf8; }

.font-mono { font-family: 'JetBrains Mono', monospace; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.85rem; }
.text-muted { color: var(--text-muted); }
.text-white { color: #ffffff !important; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

/* ==========================================================================
   LAYOUT PRINCIPAL (SIDEBAR + CONTEÚDO)
   ========================================================================== */
.app-container {
    display: flex;
    min-height: 100vh;
    position: relative;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--text-primary);
}

.brand-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-red), #e11d48);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 4px 12px rgba(255, 45, 85, 0.4);
}

.sidebar-nav {
    flex: 1;
    padding: 1.25rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    overflow-y: auto;
}

.nav-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 0.5rem 0.75rem 0.25rem;
    font-weight: 700;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
    transition: var(--transition);
}

.nav-link:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}

.nav-link.active {
    background: var(--primary-glow);
    color: #818cf8;
    font-weight: 600;
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.nav-link.active svg {
    stroke: #818cf8;
}

.sidebar-footer {
    padding: 1.25rem;
    border-top: 1px solid var(--border-color);
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.02);
}

.user-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 0.95rem;
}

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

.user-name {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* ==========================================================================
   CONTEÚDO PRINCIPAL
   ========================================================================== */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: calc(100% - var(--sidebar-width));
}

.topbar {
    height: var(--topbar-height);
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 90;
}

.topbar-mobile-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
}

.topbar-mobile-toggle svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2;
}

.content-body {
    flex: 1;
    padding: 2.25rem;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

/* ==========================================================================
   CARDS & SUPERFÍCIES
   ========================================================================== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    border-color: rgba(255, 255, 255, 0.12);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.card-title {
    font-size: 1.15rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Grid de Métricas */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.metric-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: rgba(99, 102, 241, 0.3);
}

.metric-icon-box {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-purple { background: rgba(99, 102, 241, 0.15); color: #818cf8; }
.icon-emerald { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.icon-amber { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.icon-red { background: rgba(255, 45, 85, 0.15); color: #ff2d55; }
.icon-cyan { background: rgba(6, 182, 212, 0.15); color: #22d3ee; }

.metric-icon-box svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.metric-val {
    font-size: 1.65rem;
    font-weight: 800;
    color: #ffffff;
    line-height: 1.1;
}

.metric-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 0.25rem;
}

/* ==========================================================================
   FORMULÁRIOS & BOTÕES
   ========================================================================== */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    background: rgba(17, 24, 39, 0.7);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: rgba(17, 24, 39, 0.95);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
    line-height: 1.5;
}

.form-hint {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 0.4rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.4rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    stroke-width: 2;
    fill: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), #4f46e5);
    color: #ffffff;
    box-shadow: 0 4px 14px var(--primary-glow);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #4f46e5, #4338ca);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
    color: #ffffff;
}

.btn-generate {
    background: linear-gradient(135deg, #e11d48, #be123c);
    color: #ffffff;
    font-size: 1.05rem;
    padding: 1rem 2rem;
    box-shadow: 0 6px 22px rgba(225, 29, 72, 0.35);
}

.btn-generate:hover {
    background: linear-gradient(135deg, #f43f5e, #e11d48);
    box-shadow: 0 8px 28px rgba(225, 29, 72, 0.5);
    transform: translateY(-2px);
    color: #ffffff;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.09);
    border-color: rgba(255, 255, 255, 0.15);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.25);
    color: #fca5a5;
}

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
    border-radius: var(--radius-sm);
}

.btn-copy {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

.btn-copy:hover {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    border-color: rgba(99, 102, 241, 0.4);
}

.btn-copy.copied {
    background: rgba(16, 185, 129, 0.2);
    color: #34d399;
    border-color: rgba(16, 185, 129, 0.4);
}

/* ==========================================================================
   BADGES & PILLS
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-active { background: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.3); }
.badge-inactive { background: rgba(148, 163, 184, 0.15); color: #cbd5e1; border: 1px solid rgba(148, 163, 184, 0.3); }
.badge-suspended { background: rgba(239, 68, 68, 0.15); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.3); }
.badge-expired { background: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.3); }

.badge-strategy {
    background: rgba(99, 102, 241, 0.15);
    color: #818cf8;
    border: 1px solid rgba(99, 102, 241, 0.3);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-score {
    font-weight: 800;
    font-size: 0.8rem;
    padding: 0.25rem 0.6rem;
    border-radius: var(--radius-sm);
}

.score-high { background: rgba(16, 185, 129, 0.2); color: #34d399; border: 1px solid rgba(16, 185, 129, 0.4); }
.score-med { background: rgba(245, 158, 11, 0.2); color: #fbbf24; border: 1px solid rgba(245, 158, 11, 0.4); }
.score-low { background: rgba(239, 68, 68, 0.2); color: #f87171; border: 1px solid rgba(239, 68, 68, 0.4); }

/* ==========================================================================
   RESULTADOS DE OTIMIZAÇÃO (CARDS ESPECÍFICOS)
   ========================================================================== */
.results-container {
    display: flex;
    flex-direction: column;
    gap: 1.75rem;
    margin-top: 2rem;
}

/* Card de Título Recomendado */
.recommended-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(225, 29, 72, 0.12));
    border: 1px solid rgba(99, 102, 241, 0.4);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    position: relative;
    overflow: hidden;
}

.recommended-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #6366f1, #ec4899, #f43f5e);
}

.recommended-title-text {
    font-size: 1.45rem;
    font-weight: 800;
    color: #ffffff;
    margin: 0.75rem 0;
    line-height: 1.35;
}

/* Cards de Títulos Estratégicos */
.title-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.title-item:hover {
    border-color: rgba(99, 102, 241, 0.3);
    background: rgba(255, 255, 255, 0.04);
}

.title-item-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.6rem;
}

.title-item-content {
    font-size: 1.08rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.title-item-analysis {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Chips de Tags */
.tags-wrapper {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1rem 0;
}

.tag-chip {
    background: rgba(6, 182, 212, 0.1);
    color: #22d3ee;
    border: 1px solid rgba(6, 182, 212, 0.25);
    padding: 0.35rem 0.8rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    user-select: all;
}

.tag-chip:hover {
    background: rgba(6, 182, 212, 0.2);
    border-color: rgba(6, 182, 212, 0.45);
}

/* Caixa de Código / Prompts */
.code-box {
    background: #090d16;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.88rem;
    color: #e2e8f0;
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.55;
    position: relative;
}

/* ==========================================================================
   TABELAS PROFISSIONAIS
   ========================================================================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.88rem;
}

.table th {
    background: rgba(17, 24, 39, 0.95);
    padding: 0.9rem 1.25rem;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

.table td {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
    vertical-align: middle;
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.table-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* ==========================================================================
   ALERTAS E TOASTS
   ========================================================================== */
.alert {
    padding: 0.9rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #34d399;
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #f87171;
}

.toast-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    background: #1e293b;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: 0.75rem 1.25rem;
    font-size: 0.88rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    pointer-events: auto;
    animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes toastIn {
    from { opacity: 0; transform: translateY(12px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* ==========================================================================
   MODAL DE CONFIRMAÇÃO
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

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

.modal-box {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: var(--transition);
}

.modal-overlay.open .modal-box {
    transform: translateY(0);
}

/* ==========================================================================
   TELA DE LOGIN
   ========================================================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.login-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 2.75rem 2.25rem;
    max-width: 440px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    position: relative;
}

/* ==========================================================================
   INDICADOR DE CARREGAMENTO (SPINNER & PROGRESS)
   ========================================================================== */
.loading-indicator {
    display: none;
    text-align: center;
    padding: 3rem 1.5rem;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid rgba(99, 102, 241, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 1.5rem;
}

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

/* ==========================================================================
   RESPONSIVIDADE (MOBILE & TABLET)
   ========================================================================== */
@media (max-width: 1024px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-wrapper {
        margin-left: 0;
        width: 100%;
    }

    .topbar-mobile-toggle {
        display: block;
    }

    .content-body {
        padding: 1.25rem;
    }

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

    .recommended-title-text {
        font-size: 1.2rem;
    }
}