/**
 * Luni - Login Único
 * Estilos Personalizados
 * 
 * @author CPRO/SJD/TSE
 * @version 1.0 - Etapa 1
 */

/* ============================================
   VARIÁVEIS CSS
   ============================================ */
:root {
    --luni-teal: #008080;
    --luni-teal-dark: #006666;
    --luni-teal-light: #20B2AA;
    --luni-black: #1a1a1a;
    --luni-gray: #f8f9fa;
    --luni-gray-dark: #e9ecef;
    --luni-white: #ffffff;
    --luni-red: #dc3545;
    --luni-green: #28a745;
    --luni-yellow: #ffc107;
    
    /* Sombras */
    --luni-shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --luni-shadow-md: 0 4px 8px rgba(0,0,0,0.12);
    --luni-shadow-lg: 0 8px 16px rgba(0,0,0,0.15);
    
    /* Transições */
    --luni-transition: all 0.3s ease;
    --luni-transition-fast: all 0.15s ease;
}

/* ============================================
   RESET E BASE
   ============================================ */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

/* ============================================
   BACKGROUND DA PÁGINA DE LOGIN
   ============================================ */
.luni-login-bg {
    background: linear-gradient(135deg, var(--luni-teal) 0%, var(--luni-teal-dark) 100%);
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.luni-login-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(255,255,255,0.05) 0%, transparent 50%);
    pointer-events: none;
}

/* ============================================
   LOGO E BRANDING
   ============================================ */
.luni-logo {
    font-size: 3.5rem;
    line-height: 1;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    animation: logoFloat 3s ease-in-out infinite alternate;
}

@keyframes logoFloat {
    0% { transform: translateY(0px); }
    100% { transform: translateY(-5px); }
}

/* ============================================
   FORMULÁRIOS
   ============================================ */
.luni-form {
    position: relative;
}

.luni-form .w3-input {
    transition: var(--luni-transition);
    border: 2px solid #ddd !important;
    padding: 12px 16px !important;
    font-size: 16px; /* Previne zoom no iOS */
}

.luni-form .w3-input:focus {
    border-color: var(--luni-teal) !important;
    box-shadow: 0 0 0 3px rgba(0, 128, 128, 0.1);
    outline: none;
}

.luni-form .w3-input:invalid {
    border-color: var(--luni-red) !important;
}

.luni-form label {
    font-weight: 600;
    margin-bottom: 8px;
    display: block;
    color: #333;
}

/* ============================================
   CAMPO DE SENHA COM TOGGLE
   ============================================ */
.luni-password-container {
    position: relative;
}

.luni-password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: var(--luni-transition-fast);
    font-size: 16px;
    z-index: 10;
}

.luni-password-toggle:hover {
    background-color: rgba(0,0,0,0.1);
}

.luni-password-toggle:focus {
    outline: 2px solid var(--luni-teal);
    outline-offset: 2px;
}

/* ============================================
   BOTÕES PERSONALIZADOS
   ============================================ */
.luni-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--luni-transition);
    cursor: pointer;
    font-family: inherit;
    font-size: 14px;
    line-height: 1.4;
    position: relative;
    overflow: hidden;
}

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

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

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

.luni-btn-primary:hover {
    background-color: var(--luni-teal-dark);
}

.luni-btn-secondary {
    background-color: var(--luni-gray);
    color: var(--luni-black);
    border: 1px solid var(--luni-gray-dark);
}

.luni-btn-secondary:hover {
    background-color: var(--luni-gray-dark);
}

/* ============================================
   ANIMAÇÕES E TRANSIÇÕES
   ============================================ */
.luni-fade-in {
    animation: luniClasIn 0.5s ease-out;
}

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

.luni-slide-in-right {
    animation: luniSlideInRight 0.3s ease-out;
}

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

/* ============================================
   MENSAGENS E ALERTAS
   ============================================ */
.luni-alert {
    padding: 16px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: luniClasIn 0.3s ease-out;
}

.luni-alert-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.luni-alert-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.luni-alert-warning {
    background-color: #fff3cd;
    color: #856404;
    border: 1px solid #ffeaa7;
}

.luni-alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* ============================================
   LOADING E STATES
   ============================================ */
.luni-loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: luniSpin 1s ease-in-out infinite;
}

@keyframes luniSpin {
    to { transform: rotate(360deg); }
}

.luni-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.luni-btn:disabled:hover {
    box-shadow: none !important;
}

/* ============================================
   UTILITÁRIOS
   ============================================ */
.luni-text-center { text-align: center; }
.luni-text-left { text-align: left; }
.luni-text-right { text-align: right; }

.luni-mb-0 { margin-bottom: 0 !important; }
.luni-mb-1 { margin-bottom: 0.25rem !important; }
.luni-mb-2 { margin-bottom: 0.5rem !important; }
.luni-mb-3 { margin-bottom: 1rem !important; }
.luni-mb-4 { margin-bottom: 1.5rem !important; }

.luni-mt-0 { margin-top: 0 !important; }
.luni-mt-1 { margin-top: 0.25rem !important; }
.luni-mt-2 { margin-top: 0.5rem !important; }
.luni-mt-3 { margin-top: 1rem !important; }
.luni-mt-4 { margin-top: 1.5rem !important; }

.luni-hidden { display: none !important; }
.luni-invisible { visibility: hidden !important; }

/* ============================================
   CORES DE TEXTO
   ============================================ */
.luni-text-teal { color: var(--luni-teal) !important; }
.luni-text-success { color: var(--luni-green) !important; }
.luni-text-error { color: var(--luni-red) !important; }
.luni-text-warning { color: var(--luni-yellow) !important; }
.luni-text-muted { color: #6c757d !important; }

/* ============================================
   RESPONSIVIDADE
   ============================================ */
@media (max-width: 768px) {
    .luni-logo {
        font-size: 2.5rem;
    }
    
    .luni-form .w3-input {
        font-size: 16px; /* Importante para iOS */
    }
    
    .w3-card-4 {
        margin: 20px;
        width: calc(100% - 40px) !important;
    }
}

@media (max-width: 480px) {
    .luni-login-bg {
        padding: 10px;
    }
    
    .w3-padding-32 {
        padding: 20px 16px !important;
    }
    
    .w3-padding-24 {
        padding: 16px !important;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .luni-login-bg {
        background: white !important;
    }
    
    .luni-login-bg::before {
        display: none;
    }
    
    .w3-card-4 {
        box-shadow: none !important;
        border: 1px solid #ddd;
    }
}

/* ============================================
   DARK MODE SUPPORT (futuro)
   ============================================ */
@media (prefers-color-scheme: dark) {
    /* Preparação para dark mode em versões futuras */
    .luni-form .w3-input {
        /* Ajustes para dark mode serão implementados */
    }
}

/* ============================================
   ACESSIBILIDADE
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .luni-logo {
        animation: none;
    }
}

/* Focus visível para usuários de teclado */
.luni-form input:focus,
.luni-btn:focus {
    outline: 2px solid var(--luni-teal);
    outline-offset: 2px;
}

/* ============================================
   CUSTOMIZAÇÃO DO W3CSS
   ============================================ */
.w3-teal, .w3-hover-teal:hover {
    color: #fff !important;
    background-color: var(--luni-teal) !important;
}

.w3-text-teal {
    color: var(--luni-teal) !important;
}

.w3-border-teal {
    border-color: var(--luni-teal) !important;
}

/* Melhorar contraste dos botões W3CSS */
.w3-button.w3-teal {
    background-color: var(--luni-teal) !important;
}

.w3-button.w3-teal:hover {
    background-color: var(--luni-teal-dark) !important;
}

/* ============================================
   COMPONENTES ESPECÍFICOS LUNI
   ============================================ */

/* Card de login melhorado */
.w3-card-4 {
    box-shadow: var(--luni-shadow-lg);
    max-width: 420px;
}

/* Inputs com melhor usabilidade */
.w3-input {
    font-size: 16px !important; /* Previne zoom no iOS */
}

/* Painéis de mensagem com melhor hierarquia visual */
.w3-panel {
    border-left: 4px solid transparent;
}

.w3-panel.w3-red {
    border-left-color: var(--luni-red);
}

.w3-panel.w3-green {
    border-left-color: var(--luni-green);
}

.w3-panel.w3-yellow {
    border-left-color: var(--luni-yellow);
}