/* Auth Pages - Following Calculator Design System */

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

html, body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #f8fafc;
    color: #1e293b;
    min-height: 100vh;
}

.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-card {
    background: white;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
    padding: 48px;
    max-width: 480px;
    width: 100%;
    animation: fadeIn 0.3s ease;
}

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

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

.auth-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 0.5rem;
}

.auth-header .subtitle {
    font-size: 0.875rem;
    color: #64748b;
    font-weight: 400;
}

/* Toggle Tabs - Simple Underline Style */
.auth-toggle {
    display: flex;
    gap: 2rem;
    margin-bottom: 32px;
    border-bottom: 1px solid #f1f5f9;
}

.toggle-btn {
    padding: 12px 0;
    border: none;
    background: transparent;
    color: #64748b;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s;
    font-family: 'Poppins', sans-serif;
}

.toggle-btn:hover {
    color: #1e293b;
}

.toggle-btn.active {
    color: #ef4444;
    border-bottom-color: #ef4444;
    font-weight: 600;
}

/* Form - Clean Modal Style */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: #1e293b;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 16px;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    font-size: 15px;
    background: #ffffff;
    transition: all 0.2s;
    font-family: 'Poppins', sans-serif;
    color: #1e293b;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #ef4444;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.08);
}

.form-group input:hover,
.form-group select:hover {
    border-color: #cbd5e1;
}

.form-group input:disabled,
.form-group select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-group input::placeholder {
    color: #94a3b8;
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px;
    padding-right: 2.5rem;
    cursor: pointer;
}

/* Messages - Clean and Minimal */
.error-message {
    padding: 16px;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    color: #991b1b;
    font-size: 14px;
    animation: shake 0.3s ease;
}

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

.success-message {
    padding: 16px;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    color: #15803d;
    font-size: 14px;
    animation: fadeIn 0.3s ease;
}

/* Button - Clean and Professional */
.btn-primary {
    padding: 14px 24px;
    background: #ef4444;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-top: 8px;
    font-family: 'Poppins', sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 2px rgba(239, 68, 68, 0.15);
}

.btn-primary:hover:not(:disabled) {
    background: #dc2626;
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.2);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-primary:disabled {
    background: #e2e8f0;
    cursor: not-allowed;
    color: #94a3b8;
    box-shadow: none;
}

.btn-primary:disabled span {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Footer */
.auth-footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid #f1f5f9;
    text-align: center;
}

.auth-footer .version {
    font-size: 0.75rem;
    color: #94a3b8;
    font-weight: 500;
}

/* Responsive */
@media (max-width: 480px) {
    .auth-card {
        padding: 2rem 1.5rem;
    }

    .auth-header h1 {
        font-size: 1.75rem;
    }
}