/* Reset e configurações básicas */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-red: #E31E24;
    --secondary-orange: #F39C12;
    --dark-red: #C41E3A;
    --white: #FFFFFF;
    --light-gray: #f0f1f4;
    --medium-gray: #5a5a5a;
    --dark-gray: #1a1a1a;
    --shadow: 0 4px 12px rgba(26, 26, 26, 0.12);
    --shadow-lg: 0 12px 32px rgba(26, 26, 26, 0.16);
    --shadow-button: 0 4px 16px rgba(26, 26, 26, 0.15);
    --border-radius: 8px;
    --transition: all 0.3s ease;
    --cor-borda: #d4d6db;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #e8eaef;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Container principal */
.login-container {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Fundo animado */
.login-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.background-pattern {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(26,26,26,0.05)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(1deg); }
    66% { transform: translate(-20px, 20px) rotate(-1deg); }
}

/* Card de login */
.login-card {
    position: relative;
    z-index: 2;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    animation: slideIn 0.6s ease-out;
    border: 1.5px solid var(--cor-borda);
}

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

/* Header do login */
.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.logo {
    width: 200px;
    height: auto;
    margin-bottom: 1rem;
    animation: logoGlow 2s ease-in-out infinite alternate;
}

@keyframes logoGlow {
    from { filter: drop-shadow(0 0 5px rgba(227, 30, 36, 0.3)); }
    to { filter: drop-shadow(0 0 15px rgba(227, 30, 36, 0.6)); }
}

.login-header h1 {
    color: var(--dark-gray);
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--medium-gray);
    font-size: 0.9rem;
}

/* Formulário */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--medium-gray);
    z-index: 2;
    transition: var(--transition);
}

input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--cor-borda);
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--white);
    color: var(--dark-gray);
    transition: var(--transition);
    outline: none;
    box-sizing: border-box;
    box-shadow: 0 2px 6px rgba(26, 26, 26, 0.06);
}

input::placeholder {
    color: var(--medium-gray);
}

input:focus {
    border-color: var(--primary-red);
    box-shadow: 0 4px 12px rgba(227, 30, 36, 0.15);
}

/* Melhoria no comportamento do label flutuante */
input:focus + .floating-label,
input:not(:placeholder-shown) + .floating-label,
input.has-value + .floating-label {
    transform: translateY(-1.5rem) scale(0.8);
    color: var(--primary-red);
    background: var(--white);
    padding: 0 0.5rem;
    z-index: 3;
}

input:focus ~ .input-icon {
    color: var(--primary-red);
}

.floating-label {
    position: absolute;
    left: 3rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--medium-gray);
    font-size: 1rem;
    pointer-events: none;
    transition: var(--transition);
    background: transparent;
    z-index: 2;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    background: none;
    border: none;
    color: var(--medium-gray);
    cursor: pointer;
    padding: 0.5rem;
    transition: var(--transition);
}

.toggle-password:hover {
    color: var(--primary-red);
}

/* Botão de login */
.login-button {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--dark-red) 100%);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    margin-top: 1rem;
    box-shadow: var(--shadow-button);
}

.login-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(227, 30, 36, 0.3);
}

.login-button:active {
    transform: translateY(-1px);
}

.login-button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.button-text {
    transition: var(--transition);
}

.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Mensagem de erro */
.error-message {
    background: #F8D7DA;
    color: #721C24;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    border: 1.5px solid #F5C6CB;
    font-size: 0.9rem;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Footer */
.login-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--cor-borda);
}

.login-footer p {
    color: var(--medium-gray);
    font-size: 0.8rem;
}

/* Responsividade */
@media (max-width: 768px) {
    .login-card {
        margin: 1rem;
        padding: 1.5rem;
    }
    
    .logo {
        width: 150px;
    }
    
    .login-header h1 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .login-card {
        margin: 0.5rem;
        padding: 1rem;
    }
    
    .logo {
        width: 120px;
    }
    
    input {
        padding: 0.875rem 0.875rem 0.875rem 2.5rem;
    }
    
    .floating-label {
        left: 2.5rem;
    }
    
    .input-icon {
        left: 0.875rem;
    }
}

/* Animações de entrada */
.form-group {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}

.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.2s; }
.login-button { animation: fadeInUp 0.6s ease-out 0.3s forwards; opacity: 0; }

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

/* Botão de alternar tema na página de login */
.theme-toggle-login {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.95);
    border: 1.5px solid var(--cor-borda);
    color: var(--primary-red);
    width: 45px;
    height: 45px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    z-index: 1000;
}

.theme-toggle-login:hover {
    background: var(--white);
    transform: scale(1.1) rotate(15deg);
    box-shadow: var(--shadow-lg);
}