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

:root {
    --primary-green: #10b981;
    --primary-green-dark: #059669;
    --primary-green-light: #34d399;
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --text-dark: #1f2937;
    --text-gray: #6b7280;
    --border-color: #e5e7eb;
    --error-color: #ef4444;
    --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);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #f0fdf4 0%, #ffffff 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: var(--text-dark);
    line-height: 1.6;
}

/* Container principal */
.auth-container {
    width: 100%;
    max-width: 450px;
    background: var(--bg-white);
    border-radius: 16px;
    box-shadow: var(--shadow-xl);
    padding: 40px;
    animation: fadeInUp 0.5s ease-out;
}

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

/* Logo e título */
.auth-header {
    text-align: center;
    margin-bottom: 32px;
}

.auth-header h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.auth-header p {
    color: var(--text-gray);
    font-size: 15px;
}

/* Formulário */
.auth-form {
    width: 100%;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    font-size: 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
    background: var(--bg-white);
    color: var(--text-dark);
    font-family: inherit;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-group input::placeholder {
    color: var(--text-gray);
}

/* Botão primário */
.btn-primary {
    width: 100%;
    padding: 14px;
    background: var(--primary-green);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 8px;
    font-family: inherit;
    letter-spacing: 0.3px;
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background: var(--primary-green-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

/* Link de alternância */
.auth-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.auth-footer p {
    color: var(--text-gray);
    font-size: 14px;
}

.auth-footer a {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.auth-footer a:hover {
    color: var(--primary-green-dark);
    text-decoration: underline;
}

/* Mensagens de erro/sucesso */
.message {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    animation: slideDown 0.3s ease-out;
}

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

.message.error {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.message.success {
    background: #d1fae5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

/* Decoração verde */
.green-accent {
    position: absolute;
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-green-light), var(--primary-green));
    border-radius: 50%;
    opacity: 0.1;
    filter: blur(60px);
    z-index: -1;
}

.green-accent.top-left {
    top: -100px;
    left: -100px;
}

.green-accent.bottom-right {
    bottom: -100px;
    right: -100px;
}

/* Responsividade */
@media (max-width: 768px) {
    body {
        padding: 16px;
    }
    
    .auth-container {
        padding: 32px 24px;
        border-radius: 12px;
    }
    
    .auth-header h1 {
        font-size: 24px;
    }
    
    .auth-header p {
        font-size: 14px;
    }
    
    .form-group input {
        padding: 14px 16px;
        font-size: 16px; /* Evita zoom no iOS */
    }
    
    .btn-primary {
        padding: 16px;
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .auth-container {
        padding: 24px 20px;
    }
    
    .auth-header h1 {
        font-size: 22px;
    }
}

/* Loading state */
.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Loading spinner */
.loading-spinner {
    display: block !important;
    width: 22px;
    height: 22px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-right-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    position: absolute;
    left: 50%;
    top: 50%;
    margin-left: -11px;
    margin-top: -11px;
    z-index: 10;
    opacity: 1;
    visibility: visible;
}

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

.btn-primary.loading {
    pointer-events: none;
}

.btn-primary.loading .btn-text {
    opacity: 0;
    transition: opacity 0.2s;
}

/* Animações de entrada */
.form-group {
    animation: fadeIn 0.4s ease-out;
    animation-fill-mode: both;
}

.form-group:nth-child(1) { animation-delay: 0.1s; }
.form-group:nth-child(2) { animation-delay: 0.2s; }
.form-group:nth-child(3) { animation-delay: 0.3s; }
.form-group:nth-child(4) { animation-delay: 0.4s; }
.form-group:nth-child(5) { animation-delay: 0.5s; }
.form-group:nth-child(6) { animation-delay: 0.6s; }

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