/* ===== TEMAS DE CORES ===== */

:root {
    /* Tema Claro (Light) */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #eeeeee;
    --bg-page: #f0f2f5;
    --bg-gradient-start: #667eea;
    --bg-gradient-end: #764ba2;
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    --border-color: #dddddd;
    --shade-color: rgba(0, 0, 0, 0.1);
    --shade-dark: rgba(0, 0, 0, 0.2);
    --shade-hover: rgba(0, 0, 0, 0.4);
    --input-bg: #ffffff;
    --input-border: #dddddd;
    --header-shadow: 0 5px 15px rgba(0,0,0,0.1);
    --button-hover-shadow: 0 5px 20px rgba(0,0,0,0.2);
    --modal-bg: rgba(0,0,0,0.4);
    --table-hover: #f5f5f5;
    --success-bg: #d4edda;
    --success-text: #155724;
    --error-bg: #f8d7da;
    --error-text: #721c24;
    --info-bg: #d1ecf1;
    --info-text: #0c5460;
    --warning-bg: #fff3cd;
    --warning-text: #856404;
    --card-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

/* Tema Escuro (Dark) */
body.dark-mode {
    --bg-primary: #1a1a1a;
    --bg-secondary: #252525;
    --bg-tertiary: #2f2f2f;
    --bg-page: #0d0d0d;
    --bg-gradient-start: #3d4a7f;
    --bg-gradient-end: #4a3066;
    --text-primary: #e8e8e8;
    --text-secondary: #b8b8b8;
    --text-light: #808080;
    --border-color: #404040;
    --shade-color: rgba(255, 255, 255, 0.08);
    --shade-dark: rgba(255, 255, 255, 0.12);
    --shade-hover: rgba(255, 255, 255, 0.2);
    --input-bg: #1e1e1e;
    --input-border: #3a3a3a;
    --header-shadow: 0 5px 15px rgba(0,0,0,0.6);
    --button-hover-shadow: 0 5px 20px rgba(0,0,0,0.8);
    --modal-bg: rgba(0,0,0,0.85);
    --table-hover: #2a2a2a;
    --success-bg: #1b4620;
    --success-text: #8fd98f;
    --error-bg: #4a2830;
    --error-text: #ff9999;
    --info-bg: #1e3d52;
    --info-text: #99d9ff;
    --warning-bg: #5a4a00;
    --warning-text: #ffdd99;
    --card-shadow: 0 5px 15px rgba(0,0,0,0.4);
}

/* Aplicação das variáveis em elementos comuns */
body {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-primary);
    transition: background 0.4s ease, color 0.4s ease;
    min-height: 100vh;
}

body.dark-mode {
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    background-attachment: fixed;
}

.container, .login-container {
    background: var(--bg-page);
    transition: background 0.4s ease;
}

header, .card, .content, .modal-content, table {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color 0.4s ease, color 0.4s ease;
}

.card {
    box-shadow: var(--card-shadow);
    background: var(--bg-primary);
}

.content {
    background: var(--bg-primary);
}

input, select, textarea {
    background-color: var(--input-bg);
    color: var(--text-primary);
    border-color: var(--input-border);
    transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--bg-gradient-start);
    background-color: var(--bg-secondary);
}

header {
    box-shadow: var(--header-shadow);
    transition: box-shadow 0.4s ease, background-color 0.4s ease;
}

table {
    background: var(--bg-primary);
}

table tr:hover {
    background: var(--table-hover);
}

table th {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.modal {
    background-color: var(--modal-bg);
    backdrop-filter: blur(4px);
}

.modal-content {
    box-shadow: 0 10px 40px var(--shade-dark);
}

.success-box {
    background: var(--success-bg);
    color: var(--success-text);
    border-left-color: var(--success-text);
}

.error-box {
    background: var(--error-bg);
    color: var(--error-text);
    border-left-color: var(--error-text);
}

.info-box, .alert {
    background: var(--info-bg);
    color: var(--info-text);
    border-left-color: var(--info-text);
}

.badge {
    transition: background 0.4s ease, color 0.4s ease;
}

body.dark-mode .badge-sucesso {
    background: rgba(143, 217, 143, 0.2);
    color: #8fd98f;
    border: 1px solid rgba(143, 217, 143, 0.4);
}

body.dark-mode .badge-erro {
    background: rgba(255, 153, 153, 0.2);
    color: #ff9999;
    border: 1px solid rgba(255, 153, 153, 0.4);
}

.theme-toggle-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.4s ease;
    user-select: none;
    font-size: 14px;
    color: var(--text-primary);
    font-family: inherit;
}

.theme-toggle-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--bg-gradient-start);
    box-shadow: 0 4px 12px var(--shade-dark);
}

.theme-toggle-btn:active {
    transform: scale(0.98);
}

.theme-toggle-icon {
    font-size: 16px;
    transition: transform 0.4s ease;
}

.theme-toggle-btn:hover .theme-toggle-icon {
    transform: rotate(20deg);
}

/* Estilos para elementos com background secundário */
.chart-container, .upload-area, .file-info {
    background: var(--bg-primary);
    border-color: var(--border-color);
    transition: background 0.4s ease, border-color 0.4s ease;
}

.upload-area {
    border-color: var(--bg-gradient-start);
}

.upload-area:hover {
    background: var(--bg-secondary);
    border-color: var(--bg-gradient-end);
}

.upload-area.dragover {
    border-color: #28a745;
    background: var(--bg-secondary);
}

/* Scrollbar customizado */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}

/* Campos de form */
.form-group {
    transition: all 0.4s ease;
}

label {
    color: var(--text-primary);
    transition: color 0.4s ease;
}

/* Botões */
.btn {
    transition: all 0.3s ease;
}

.btn:hover {
    box-shadow: var(--button-hover-shadow);
}

/* Grid e layouts */
.grid {
    gap: 20px;
}

/* Animação suave при переключении темы */
body * {
    transition: background-color 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}

/* Exception para elementos com transições rápidas */
button, a, .btn, .theme-toggle-btn {
    transition: all 0.3s ease;
}

/* Gradiente responsivo ao tema */
body.dark-mode {
    --card-background: linear-gradient(135deg, rgba(60, 74, 127, 0.1) 0%, rgba(74, 48, 102, 0.1) 100%);
}