/* ==========================================
   VARIÁVEIS GLOBAIS - TEMA CLARO (PADRÃO)
   ========================================== */
:root {
    /* Cores Base - Tema Claro */
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-tertiary: #64748b;
    --accent-primary: #4f46e5;
    --accent-secondary: #818cf8;
    --accent-soft: #eef2ff;
    --border-light: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
}

/* ==========================================
   TEMA ESCURO
   ========================================== */
[data-bs-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --accent-primary: #6366f1;
    --accent-secondary: #818cf8;
    --accent-soft: rgba(99, 102, 241, 0.15);
    --border-light: #334155;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.5);
}

/* ==========================================
   ESTILOS BASE
   ========================================== */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.5;
}

/* ==========================================
   MODAL CUSTOMIZADO
   ========================================== */
.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
}

.modal-dialog {
    max-width: 900px;
}

.modal.fade .modal-dialog {
    transform: scale(0.95);
    transition: transform 0.2s ease;
}

.modal.show .modal-dialog {
    transform: scale(1);
}

.btn-close {
    background: transparent;
    opacity: 0.7;
    transition: opacity 0.2s ease;
    filter: invert(var(--invert-value, 0));
}

[data-bs-theme="dark"] .btn-close {
    filter: invert(1);
}

.btn-close:hover {
    opacity: 1;
}

/* ==========================================
   CONTAINER PRINCIPAL
   ========================================== */
.container {
    padding: 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 1.5rem;
    }
}

/* ==========================================
   HEADER
   ========================================== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-light);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.02em;
}

.logo i {
    font-size: 1.8rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==========================================
   GRID DE WIDGETS
   ========================================== */
.widgets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

@media (max-width: 768px) {
    .widgets-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

.grid-item {
    display: flex;
    height: 100%;
}

/* ==========================================
   CARD WIDGET
   ========================================== */
.card {
    width: 100%;
    background: var(--bg-secondary);
    border-radius: 24px;
    padding: 1.75rem;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-primary);
}

.card-title {
    font-weight: 600;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: uppercase;
}

.card-title i {
    color: var(--accent-primary);
    font-size: 1rem;
}

/* ==========================================
   RELÓGIO
   ========================================== */
.clock-display {
    text-align: center;
    padding: 1rem 0;
}

.clock-time {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: 2px;
    font-variant-numeric: tabular-nums;
    margin-bottom: 0.5rem;
}

.clock-date {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-weight: 500;
}

.timezone-badge {
    background: var(--accent-soft);
    color: var(--accent-primary);
    padding: 0.5rem 1rem;
    border-radius: 40px;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin: 0 auto;
}

.timezone-badge i {
    font-size: 0.9rem;
}

.timezone-buttons {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.btn-tz {
    border: 1px solid var(--border-light);
    background: transparent;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 40px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
}

.btn-tz:hover {
    background: var(--accent-soft);
    color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.btn-tz.active {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* ==========================================
   CRONÔMETRO
   ========================================== */
.stopwatch-display {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
    letter-spacing: 2px;
    margin: 1rem 0;
    padding: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 16px;
    border: 1px solid var(--border-light);
}

.progress-container {
    height: 6px;
    background: var(--border-light);
    border-radius: 20px;
    overflow: hidden;
    margin: 1rem 0;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    width: 0%;
    transition: width 0.1s linear;
    border-radius: 20px;
}

.control-buttons {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.btn-control {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    transition: all 0.2s ease;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    border: 1px solid var(--border-light);
}

.btn-control:hover {
    background: var(--accent-primary);
    color: white;
    transform: scale(1.1);
    border-color: var(--accent-primary);
}

.btn-control:active {
    transform: scale(0.95);
}

/* ==========================================
   VOLTAS DO CRONÔMETRO
   ========================================== */
.laps-container {
    margin-top: 1rem;
    max-height: 150px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-primary) var(--border-light);
}

.laps-container::-webkit-scrollbar {
    width: 4px;
}

.laps-container::-webkit-scrollbar-track {
    background: var(--border-light);
    border-radius: 10px;
}

.laps-container::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 10px;
}

.laps-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-tertiary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.lap-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-light);
    transition: background 0.2s ease;
}

.lap-item:hover {
    background: var(--bg-tertiary);
}

.lap-number {
    color: var(--text-tertiary);
    font-weight: 500;
}

.lap-time {
    font-weight: 600;
    color: var(--text-primary);
    font-variant-numeric: tabular-nums;
}

/* ==========================================
   ATALHOS
   ========================================== */
.shortcuts {
    margin-top: 1rem;
    padding: 0.75rem;
    font-size: 0.75rem;
    text-align: center;
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.shortcuts i {
    color: var(--accent-primary);
}

/* ==========================================
   RESPONSIVIDADE EXTRA
   ========================================== */
@media (max-width: 576px) {
    .modal-dialog {
        margin: 0.5rem;
    }
    
    .container {
        padding: 1rem;
    }

    .clock-time {
        font-size: 2.2rem;
    }

    .stopwatch-display {
        font-size: 1.8rem;
    }

    .btn-control {
        width: 42px;
        height: 42px;
        font-size: 1rem;
    }
    
    .btn-tz {
        padding: 0.4rem 0.8rem;
        font-size: 0.75rem;
    }
}

/* ==========================================
   ANIMAÇÕES
   ========================================== */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.stopwatch-display {
    animation: pulse 2s ease-in-out infinite;
}

.stopwatch-display:not(.running) {
    animation: none;
}

/* ==========================================
   UTILITÁRIOS
   ========================================== */
.text-accent {
    color: var(--accent-primary);
}

.bg-soft {
    background: var(--accent-soft);
}

.border-rounded {
    border-radius: 40px;
}