/* ============================================
   LOGIN E REGISTER - CSS PREMIUM GLASSMORPHISM
   ============================================ */

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #64748b;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #0f172a;
    --light: #f8fafc;
    --white: #ffffff;
    --gray: #94a3b8;
    --border: rgba(255, 255, 255, 0.2);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
    --radius: 24px;
    --radius-sm: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background:
      linear-gradient(
          135deg,
          rgba(15, 23, 42, 0.8),
          rgba(30, 41, 59, 0.85)
      ),
      url('../img/login_bg.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

/* Container */
.login-container,
.register-container {
    width: 100%;
    max-width: 460px;
    perspective: 1000px;
}

/* Card */
.card {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xl), inset 0 0 0 1px rgba(255, 255, 255, 0.3);
    overflow: hidden;
    transition: var(--transition);
    border: none;
    animation: slideUp 0.6s ease-out;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.4), inset 0 0 0 1px rgba(255, 255, 255, 0.4);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header */
.card-header {
    background: rgba(15, 23, 42, 0.4);
    color: var(--white);
    padding: 40px 24px 28px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.card-header h4 {
    font-size: 26px;
    font-weight: 800;
    margin-bottom: 6px;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff 30%, var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.card-header p {
    font-size: 14px;
    opacity: 0.75;
    margin: 0;
}

.card-header i {
    font-size: 48px;
    margin-bottom: 14px;
    display: block;
    color: var(--primary-light);
    filter: drop-shadow(0 4px 12px rgba(99, 102, 241, 0.3));
}

/* Body */
.card-body {
    padding: 36px;
}

/* Formulário */
.mb-3 {
    margin-bottom: 20px;
}

.form-label {
    font-size: 12px;
    font-weight: 700;
    color: #475569;
    margin-bottom: 8px;
    display: block;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-label i {
    margin-right: 6px;
    color: var(--primary);
}

.form-control {
    width: 100%;
    padding: 12px 18px;
    border: 1.5px solid #cbd5e1;
    border-radius: var(--radius-sm);
    font-size: 14px;
    transition: var(--transition);
    font-family: inherit;
    background: rgba(255, 255, 255, 0.6);
    color: var(--dark);
    font-weight: 500;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
}

/* Botão */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    border: none;
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.25);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

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

/* Alertas */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
    border: 1px solid transparent;
    font-weight: 600;
}

.alert-danger {
    background: rgba(254, 242, 242, 0.9);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.2);
}

.alert-success {
    background: rgba(240, 253, 244, 0.9);
    color: var(--success);
    border-color: rgba(16, 185, 129, 0.2);
}

/* Links */
.text-center {
    text-align: center;
}

.mt-3 {
    margin-top: 20px;
}

.mb-0 {
    margin-bottom: 0;
}

a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

/* ============================================
   DARK MODE
   ============================================ */
body.dark-mode {
    background: linear-gradient(135deg, #090d16 0%, #0f172a 100%);
}

body.dark-mode .card {
    background: rgba(15, 23, 42, 0.8);
    box-shadow: var(--shadow-xl), inset 0 0 0 1px rgba(255, 255, 255, 0.08);
    color: var(--light);
}

body.dark-mode .card-header {
    background: rgba(15, 23, 42, 0.6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

body.dark-mode .form-label {
    color: var(--gray);
}

body.dark-mode .form-control {
    background: rgba(15, 23, 42, 0.4);
    border-color: #334155;
    color: var(--light);
}

body.dark-mode .form-control:focus {
    background: rgba(15, 23, 42, 0.85);
    border-color: var(--primary-light);
}

body.dark-mode .alert-danger {
    background: rgba(127, 29, 29, 0.4);
    color: #fecaca;
    border-color: rgba(239, 68, 68, 0.2);
}

body.dark-mode .alert-success {
    background: rgba(6, 78, 59, 0.4);
    color: #a7f3d0;
    border-color: rgba(16, 185, 129, 0.2);
}

body.dark-mode a {
    color: var(--primary-light);
}

body.dark-mode a:hover {
    color: var(--primary);
}

/* ============================================
   RESPONSIVO
   ============================================ */
@media (max-width: 520px) {
    .card-body {
        padding: 28px;
    }
    
    .card-header {
        padding: 32px 20px;
    }
    
    .card-header h4 {
        font-size: 22px;
    }
    
    .card-header i {
        font-size: 40px;
    }
    
    .login-container,
    .register-container {
        max-width: 100%;
        margin: 0;
    }
}