/* Basic Login Form - Clean & Simple */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: #f8fafc;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    line-height: 1.6;
    color: #334155;
}

.login-container {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: white;
    border-radius: 12px;
    padding: 32px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-header h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 8px;
}

.login-header p {
    color: #64748b;
    font-size: 0.875rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.input-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
}

.input-wrapper input {
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    padding: 12px 16px 8px 16px;
    color: #1e293b;
    font-size: 16px;
    transition: all 0.2s ease;
    width: 100%;
    outline: none;
}

.input-wrapper input::placeholder {
    color: transparent;
}

.input-wrapper label {
    position: absolute;
    left: 16px;
    top: 12px;
    color: #64748b;
    font-size: 16px;
    transition: all 0.2s ease;
    pointer-events: none;
    transform-origin: left top;
}

.input-wrapper input:focus,
.input-wrapper input:valid,
.input-wrapper input.has-value {
    border-color: #6366f1;
}

.input-wrapper input:focus + label,
.input-wrapper input:valid + label,
.input-wrapper input.has-value + label {
    transform: translateY(-8px) scale(0.875);
    color: #6366f1;
    font-weight: 500;
}

/* Password Toggle */
.password-wrapper {
    position: relative;
}

.password-wrapper input {
    padding-right: 48px;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: #64748b;
    transition: color 0.2s ease;
}

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

.eye-icon {
    display: block;
    width: 20px;
    height: 20px;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b' stroke-width='1.5'%3e%3cpath stroke-linecap='round' stroke-linejoin='round' d='M15 12a3 3 0 11-6 0 3 3 0 016 0z'/%3e%3cpath stroke-linecap='round' stroke-linejoin='round' d='M2.458 12C3.732 7.943 7.523 5 12 5c4.478 0 8.268 2.943 9.542 7-1.274 4.057-5.064 7-9.542 7-4.477 0-8.268-2.943-9.542-7z'/%3e%3c/svg%3e");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    transition: background-image 0.2s ease;
}

.eye-icon.show-password {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b' stroke-width='1.5'%3e%3cpath stroke-linecap='round' stroke-linejoin='round' d='M3.98 8.223A10.477 10.477 0 001.934 12C3.226 16.338 7.244 19.5 12 19.5c.993 0 1.953-.138 2.863-.395M6.228 6.228A10.45 10.45 0 0112 4.5c4.756 0 8.773 3.162 10.065 7.498a10.523 10.523 0 01-4.293 5.774M6.228 6.228L3 3m3.228 3.228l3.65 3.65m7.894 7.894L21 21m-3.228-3.228l-3.65-3.65m0 0a3 3 0 11-4.243-4.243m4.242 4.242L9.88 9.88'/%3e%3c/svg%3e");
}

/* Error Messages */
.error-message {
    display: block;
    color: #ef4444;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 4px;
    margin-left: 4px;
    opacity: 0;
    transform: translateY(-4px);
    transition: all 0.2s ease;
}

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

.form-group.error .input-wrapper input {
    border-color: #ef4444;
}

/* Form Options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.remember-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.remember-wrapper input[type="checkbox"] {
    display: none;
}

.checkbox-label {
    color: #64748b;
    font-size: 0.875rem;
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.checkmark {
    width: 16px;
    height: 16px;
    border: 2px solid #d1d5db;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
    background: white;
}

.remember-wrapper input[type="checkbox"]:checked ~ .checkbox-label .checkmark {
    background: #6366f1;
    border-color: #6366f1;
}

.remember-wrapper input[type="checkbox"]:checked ~ .checkbox-label .checkmark::after {
    content: '✓';
    color: white;
    font-size: 10px;
    font-weight: bold;
}

.forgot-password {
    color: #6366f1;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.forgot-password:hover {
    color: #4f46e5;
}

/* Button */
.login-btn {
    width: 100%;
    background: #6366f1;
    border: none;
    border-radius: 8px;
    padding: 12px 24px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    margin-bottom: 24px;
}

.login-btn:hover {
    background: #4f46e5;
}

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

/* Loading State */
.login-btn.loading {
    pointer-events: none;
    background: #a5a6f6;
}

.btn-text {
    transition: opacity 0.2s ease;
}

.btn-loader {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    opacity: 0;
    animation: spin 1s linear infinite;
    transition: opacity 0.2s ease;
}

.login-btn.loading .btn-text {
    opacity: 0;
}

.login-btn.loading .btn-loader {
    opacity: 1;
}

/* Signup Link */
.signup-link {
    text-align: center;
}

.signup-link p {
    color: #64748b;
    font-size: 0.875rem;
}

.signup-link a {
    color: #6366f1;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.signup-link a:hover {
    color: #4f46e5;
}

/* Success Message */
.success-message {
    display: none;
    text-align: center;
    padding: 32px 20px;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.success-message.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.success-icon {
    width: 48px;
    height: 48px;
    background: #22c55e;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: white;
    margin: 0 auto 16px;
    animation: successPulse 0.5s ease;
}

.success-message h3 {
    color: #1e293b;
    font-size: 1.25rem;
    margin-bottom: 8px;
}

.success-message p {
    color: #64748b;
    font-size: 0.875rem;
}

/* Animations */
@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes successPulse {
    0% { transform: scale(0); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

/* Mobile Responsive */
@media (max-width: 480px) {
    .login-card {
        padding: 24px;
        margin: 10px;
    }
    
    .login-header h2 {
        font-size: 1.5rem;
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
}
/* === Accessibility: keyboard focus indicators === */
/* Restores visible focus rings for keyboard users without affecting mouse interaction. */
:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Reduced motion: respect user preference. Animations defined per form will tone down. */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}
