/* ========================================
   ESTILOS DE AUTENTICAÇÃO - GERASORTEIA
   Sistema moderno e responsivo para login/registro
   ======================================== */

/* ========================================
   VARIÁVEIS CSS CUSTOMIZADAS
   ======================================== */
:root {
    /* Cores principais */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary: #f59e0b;
    --accent: #10b981;
    --purple: #7c3aed;
    --pink: #ec4899;
    --dark: #0f172a;
    --gray: #64748b;
    --light-gray: #f8fafc;
    --white: #ffffff;
    
    /* Gradientes modernos */
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #f5576c 75%, #4facfe 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.95), rgba(255,255,255,0.9));
    --gradient-button: linear-gradient(135deg, #667eea, #764ba2);
    --gradient-gold: linear-gradient(135deg, #ffd700, #ffb347);
    --gradient-success: linear-gradient(135deg, #10b981, #059669);
    --gradient-error: linear-gradient(135deg, #ef4444, #dc2626);
    --gradient-warning: linear-gradient(135deg, #f59e0b, #d97706);
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-neon: 0 0 30px rgba(102, 126, 234, 0.5);
    
    /* Transições */
    --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Tipografia */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;
}

/* ========================================
   RESET E CONFIGURAÇÕES GLOBAIS
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--dark);
    background: var(--gradient-hero);
    min-height: 100vh;
    overflow-x: hidden;
    font-weight: var(--font-weight-normal);
}

/* ========================================
   PÁGINA DE AUTENTICAÇÃO
   ======================================== */
.auth-page {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 2rem 1rem;
    position: relative;
}

/* ========================================
   PARTÍCULAS DE FUNDO ANIMADAS
   ======================================== */
.particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.particle {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 15s infinite linear;
    backdrop-filter: blur(1px);
}

@keyframes float {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}

/* ========================================
   CONTAINER PRINCIPAL
   ======================================== */
.auth-container {
    width: 100%;
    max-width: 420px;
    margin: 0 auto;
    z-index: 1;
}

/* ========================================
   HEADER DE AUTENTICAÇÃO
   ======================================== */
.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    margin-bottom: 1rem;
    transition: var(--transition-normal);
}

.auth-logo:hover {
    transform: translateY(-2px);
}

.logo-icon {
    font-size: 3rem;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
    animation: rotate-slow 20s linear infinite;
}

@keyframes rotate-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.logo-text {
    font-size: 2.5rem;
    font-weight: var(--font-weight-black);
    background: linear-gradient(135deg, #ffffff, #f1f5f9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.auth-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    font-weight: var(--font-weight-medium);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

/* ========================================
   CARD DE AUTENTICAÇÃO
   ======================================== */
.auth-card {
    background: var(--gradient-card);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 2rem;
    padding: 3rem;
    box-shadow: var(--shadow-2xl);
    position: relative;
    overflow: hidden;
    margin-bottom: 2rem;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-hero);
    border-radius: 2rem 2rem 0 0;
}

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

.card-title {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--dark);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.card-title i {
    color: var(--primary);
}

.card-description {
    color: var(--gray);
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
}

/* ========================================
   ALERTAS E MENSAGENS
   ======================================== */
.alert {
    padding: 1rem 1.5rem;
    border-radius: 1rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: var(--font-weight-medium);
    border: 1px solid;
    position: relative;
    animation: slideInDown 0.3s ease;
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(5, 150, 105, 0.1));
    color: #065f46;
    border-color: rgba(16, 185, 129, 0.3);
}

.alert-error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.1), rgba(220, 38, 38, 0.1));
    color: #7f1d1d;
    border-color: rgba(239, 68, 68, 0.3);
}

.alert-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(217, 119, 6, 0.1));
    color: #78350f;
    border-color: rgba(245, 158, 11, 0.3);
}

.alert-info {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(29, 78, 216, 0.1));
    color: #1e3a8a;
    border-color: rgba(37, 99, 235, 0.3);
}

.alert-close {
    position: absolute;
    top: 0.75rem;
    right: 1rem;
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    opacity: 0.7;
    transition: var(--transition-fast);
}

.alert-close:hover {
    opacity: 1;
    transform: scale(1.1);
}

/* ========================================
   FORMULÁRIO DE AUTENTICAÇÃO
   ======================================== */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-weight: var(--font-weight-semibold);
    color: var(--dark);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-label i {
    color: var(--primary);
    font-size: 0.75rem;
}

.form-input {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid #e2e8f0;
    border-radius: 1rem;
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    transition: var(--transition-normal);
    color: var(--dark);
}

.form-input::placeholder {
    color: var(--gray);
    font-weight: var(--font-weight-normal);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background: rgba(255, 255, 255, 1);
    transform: translateY(-1px);
}

.input-group {
    position: relative;
    display: flex;
}

.input-group .form-input {
    flex: 1;
    padding-right: 3.5rem;
}

.input-addon {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 0.5rem;
    transition: var(--transition-fast);
}

.input-addon:hover {
    color: var(--primary);
    background: rgba(37, 99, 235, 0.1);
}

.form-error {
    color: #dc2626;
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    margin-top: 0.25rem;
    opacity: 0;
    transform: translateY(-10px);
    transition: var(--transition-normal);
}

.form-error.show {
    opacity: 1;
    transform: translateY(0);
}

.form-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-checkbox {
    width: 1.25rem;
    height: 1.25rem;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-check-label {
    font-size: 0.875rem;
    color: var(--gray);
    cursor: pointer;
    user-select: none;
}

.forgot-link {
    color: var(--primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: var(--font-weight-semibold);
    transition: var(--transition-fast);
}

.forgot-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

/* ========================================
   BOTÕES DE AUTENTICAÇÃO
   ======================================== */
.auth-btn {
    width: 100%;
    padding: 1.25rem 2rem;
    border: none;
    border-radius: 1rem;
    font-size: 1.1rem;
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    user-select: none;
}

.auth-btn-primary {
    background: var(--gradient-button);
    color: white;
    box-shadow: var(--shadow-lg);
}

.auth-btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

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

.auth-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none !important;
}

.btn-loading {
    display: none;
}

.auth-btn.loading .btn-text {
    display: none;
}

.auth-btn.loading .btn-loading {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Efeito de ondas no botão */
.auth-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.auth-btn:active::before {
    width: 300px;
    height: 300px;
}

/* ========================================
   LOGIN SOCIAL
   ======================================== */
.social-login {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.divider {
    text-align: center;
    margin-bottom: 1.5rem;
    position: relative;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(0, 0, 0, 0.1), transparent);
}

.divider span {
    background: white;
    padding: 0 1rem;
    color: var(--gray);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
}

.social-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.social-btn {
    padding: 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 1rem;
    background: white;
    color: var(--dark);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
}

.social-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.google-btn:hover {
    border-color: #ea4335;
    color: #ea4335;
}

.facebook-btn:hover {
    border-color: #1877f2;
    color: #1877f2;
}

/* ========================================
   FOOTER DE AUTENTICAÇÃO
   ======================================== */
.auth-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.switch-text {
    color: var(--gray);
    font-weight: var(--font-weight-medium);
}

.switch-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: var(--font-weight-bold);
    transition: var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.switch-link:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.switch-link i {
    font-size: 0.75rem;
    transition: var(--transition-fast);
}

.switch-link:hover i {
    transform: translateX(2px);
}

/* ========================================
   CARD DE DEMONSTRAÇÃO
   ======================================== */
.demo-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1.5rem;
    padding: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.demo-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: white;
    font-weight: var(--font-weight-bold);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.demo-header i {
    color: var(--secondary);
}

.demo-content p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 1rem;
}

.demo-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    background: rgba(255, 255, 255, 0.1);
    padding: 0.75rem 1.5rem;
    border-radius: 0.75rem;
    transition: var(--transition-normal);
}

.demo-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* ========================================
   BARRA DE ESTATÍSTICAS
   ======================================== */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

.stat-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1rem;
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition-normal);
}

.stat-item:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-number {
    font-size: 1.5rem;
    font-weight: var(--font-weight-black);
    color: white;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ========================================
   LOADING OVERLAY
   ======================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-overlay.show {
    display: flex;
}

.loading-spinner {
    background: white;
    border-radius: 1.5rem;
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-2xl);
    max-width: 300px;
    width: 90%;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #e2e8f0;
    border-top: 4px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1.5rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    color: var(--gray);
    font-weight: var(--font-weight-semibold);
}

/* ========================================
   RESPONSIVIDADE
   ======================================== */

/* Tablets */
@media (max-width: 768px) {
    .auth-container {
        max-width: 100%;
        padding: 0 1rem;
    }
    
    .auth-card {
        padding: 2rem;
        border-radius: 1.5rem;
    }
    
    .logo-text {
        font-size: 2rem;
    }
    
    .logo-icon {
        font-size: 2.5rem;
    }
    
    .social-buttons {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .stats-bar {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .demo-card {
        padding: 1.5rem;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .auth-page {
        padding: 1rem 0.5rem;
    }
    
    .auth-card {
        padding: 1.5rem;
        border-radius: 1rem;
    }
    
    .card-title {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .form-input {
        padding: 0.875rem 1rem;
    }
    
    .auth-btn {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
    
    .logo-text {
        font-size: 1.75rem;
    }
    
    .logo-icon {
        font-size: 2rem;
    }
    
    .auth-subtitle {
        font-size: 1rem;
    }
    
    .stat-item {
        padding: 1rem;
    }
    
    .stat-number {
        font-size: 1.25rem;
    }
    
    .demo-card {
        padding: 1rem;
    }
    
    .loading-spinner {
        padding: 2rem;
    }
}

/* ========================================
   ANIMAÇÕES ADICIONAIS
   ======================================== */

/* Entrada suave dos elementos */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

/* Pulsação sutil */
@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

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

/* Brilho nos elementos */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

.shimmer {
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}

/* ========================================
   ESTADOS DE ERRO NOS INPUTS
   ======================================== */
.form-input.error {
    border-color: #dc2626;
    background: rgba(220, 38, 38, 0.05);
}

.form-input.error:focus {
    border-color: #dc2626;
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form-input.success {
    border-color: #10b981;
    background: rgba(16, 185, 129, 0.05);
}

.form-input.success:focus {
    border-color: #10b981;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* ========================================
   DARK MODE (FUTURO)
   ======================================== */
@media (prefers-color-scheme: dark) {
    /* Implementar dark mode quando necessário */
}

/* ========================================
   UTILITÁRIOS
   ======================================== */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.text-center {
    text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }