:root {
    --primary-color: #ddff00;
    --primary-hover: #c9e600;
    --dark-bg: #0f0f0f;
    --card-bg: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #999999;
    --border-color: #2a2a2a;
    --input-bg: #151515;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

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

html, body {
    height: 100%;
    font-family: 'Vazirmatn', -apple-system, system-ui, sans-serif;
    font-size: 15px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

body {
    background: var(--dark-bg);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

/* ==================== CONTAINER ==================== */

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

/* ==================== CARD ==================== */

.auth-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2.5rem 2rem;
}

/* ==================== HEADER ==================== */

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

.auth-logo {
    width: 48px;
    height: 48px;
    margin: 0 auto 1rem;
    background: var(--primary-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--dark-bg);
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.auth-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 400;
}

/* ==================== ALERT ==================== */

.alert {
    padding: 0.875rem 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.625rem;
}

.alert i {
    font-size: 1rem;
}

.alert-success {
    background: rgba(76, 175, 80, 0.1);
    color: #4CAF50;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.alert-danger {
    background: rgba(244, 67, 54, 0.1);
    color: #F44336;
    border: 1px solid rgba(244, 67, 54, 0.3);
}

/* ==================== FORM ==================== */

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

/* ==================== FORM GROUP ==================== */

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
}

/* ==================== INPUT ==================== */

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 0.9375rem;
    color: var(--text-primary);
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: all 0.2s ease;
    font-family: inherit;
    outline: none;
}

.form-control::placeholder {
    color: #666;
}

.form-control:focus {
    border-color: var(--primary-color);
    background: var(--input-bg);
}

.form-control:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==================== INPUT WITH ICON ==================== */

.form-group > div {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
    font-size: 1rem;
    pointer-events: none;
}

.form-group:focus-within .input-icon {
    color: var(--primary-color);
}

.form-control:not(:placeholder-shown) + .input-icon {
    color: var(--text-secondary);
}

/* ==================== PASSWORD TOGGLE ==================== */

.password-toggle {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #666;
    font-size: 1rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 4px;
    transition: color 0.2s;
}

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

/* ==================== CHECKBOX ==================== */

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check-input {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.form-check-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    cursor: pointer;
}

/* ==================== FORGOT PASSWORD ==================== */

.forgot-password {
    text-align: left;
}

.forgot-password a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.forgot-password a:hover {
    color: var(--primary-color);
}

/* ==================== BUTTON ==================== */

.btn {
    width: 100%;
    padding: 0.875rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--dark-bg);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-primary:active:not(:disabled) {
    transform: scale(0.98);
}

.btn-social {
    background: var(--input-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-social:hover:not(:disabled) {
    border-color: var(--primary-color);
}

/* ==================== LOADING STATE ==================== */

.btn.loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ==================== DIVIDER ==================== */

.divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

/* ==================== SOCIAL BUTTONS ==================== */

.social-buttons {
    display: grid;
    gap: 0.75rem;
}

/* ==================== LINKS ==================== */

.auth-links {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.auth-links p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.auth-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    transition: opacity 0.2s;
}

.auth-link:hover {
    opacity: 0.8;
}

/* ==================== BACK LINK ==================== */

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
    padding: 0.5rem;
    margin-top: 1rem;
}

.back-link:hover {
    color: var(--primary-color);
}

/* ==================== VALIDATION ==================== */

.form-control.is-valid {
    border-color: #4CAF50;
}

.form-control.is-invalid {
    border-color: #F44336;
}

/* ==================== RESPONSIVE ==================== */

@media (min-width: 480px) {
    .auth-card {
        padding: 3rem 2.5rem;
    }
    
    .social-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==================== UTILITIES ==================== */

.text-center { text-align: center; }
.mt-3 { margin-top: 1rem; }
.w-100 { width: 100%; }
.d-flex { display: flex; }
.gap-1 { gap: 0.5rem; }

/* ==================== END ==================== */