/* ════════════════════════════════════════════════
   app.css — Design System & Estilos Globais (Premium)
   ════════════════════════════════════════════════ */

:root {
    /* Paleta de Cores Premium (Dark Mode Base) */
    --bg-primary: #0f172a; /* Slate 900 */
    --bg-secondary: #1e293b; /* Slate 800 */
    --bg-tertiary: #334155; /* Slate 700 */
    
    --accent-primary: #6366f1; /* Indigo 500 */
    --accent-hover: #4f46e5; /* Indigo 600 */
    --accent-light: #818cf8; /* Indigo 400 */
    
    --success: #10b981; /* Emerald 500 */
    --warning: #f59e0b; /* Amber 500 */
    --error: #ef4444; /* Red 500 */
    
    --text-primary: #f8fafc; /* Slate 50 */
    --text-secondary: #cbd5e1; /* Slate 300 */
    --text-muted: #94a3b8; /* Slate 400 */
    
    --border-color: rgba(255, 255, 255, 0.1);
    
    /* Configurações Glassmorphism */
    --glass-bg: rgba(30, 41, 59, 0.65);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: 16px;
    --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);

    /* Tipografia */
    --font-main: 'Outfit', sans-serif;
    
    /* Transições */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* ── Reset & Globais ──────────────────────────────────────────────────────── */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-main);
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a:hover {
    color: var(--text-primary);
}

.hidden {
    display: none !important;
}

.w-full {
    width: 100%;
}

.min-h-screen {
    min-height: 100vh;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Background com Gradiente Dinâmico */
.bg-gradient {
    background: radial-gradient(circle at 15% 50%, rgba(99, 102, 241, 0.15), transparent 25%),
                radial-gradient(circle at 85% 30%, rgba(16, 185, 129, 0.1), transparent 25%),
                var(--bg-primary);
}

/* ── Glassmorphism Panels ─────────────────────────────────────────────────── */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    padding: 2.5rem;
}

/* ── Login/Auth Specifics ─────────────────────────────────────────────────── */
.login-container {
    width: 100%;
    max-width: 420px;
    animation: fadeIn 0.5s ease forwards;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-light));
    border-radius: 14px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 28px;
    font-weight: 700;
    margin: 0 auto 1rem;
    box-shadow: 0 8px 16px rgba(99, 102, 241, 0.3);
}

.login-header h1 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 14px;
    color: var(--text-muted);
}

/* ── Form Elements ────────────────────────────────────────────────────────── */
.form-group {
    margin-bottom: 1.25rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 0.85rem 1rem;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--bg-tertiary);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 15px;
    transition: all var(--transition-normal);
    outline: none;
}

input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    background: rgba(15, 23, 42, 0.8);
}

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 0.85rem 1.5rem;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    outline: none;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

/* ── Alerts & Loaders ─────────────────────────────────────────────────────── */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 8px;
    margin-bottom: 1.25rem;
    font-size: 14px;
    font-weight: 500;
    animation: slideDown 0.3s ease forwards;
}

.alert-error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-success {
    background: rgba(16, 185, 129, 0.15);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #6ee7b7;
}

.loader-container {
    display: flex;
    justify-content: center;
    padding: 1rem 0;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    border-top-color: var(--accent-primary);
    animation: spin 1s ease-in-out infinite;
}

/* ── Animations ───────────────────────────────────────────────────────────── */
@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}