/**
 * =====================================================================================
 * LOGIN / OTP STYLES - MINIMAL DESIGN
 * =====================================================================================
 * استایل صفحه ورود با OTP - طراحی مینیمال و ساده
 * =====================================================================================
 */

/* ==================== CSS Variables ==================== */
:root {
    --login-primary: #6366f1;
    --login-primary-dark: #4f46e5;
    --login-primary-light: #818cf8;
    --login-secondary: #9ca3af;
    --login-success: #10b981;
    --login-error: #f87171;
    --login-warning: #fbbf24;
    --login-bg: #f8fafc;
    --login-card-bg: #ffffff;
    --login-card-border: #e2e8f0;
    --login-text: #1e293b;
    --login-text-muted: #64748b;
    --login-input-bg: #f1f5f9;
    --login-input-border: #e2e8f0;
    --login-input-focus: #6366f1;
    --login-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --login-radius: 12px;
    --login-radius-sm: 8px;
    --login-transition: all 0.2s ease;
}

/* ==================== Reset & Base ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Vazirmatn', 'Tahoma', sans-serif;
    background: var(--login-bg);
    color: var(--login-text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    line-height: 1.6;
}

/* ==================== Login Container ==================== */
.login-container {
    position: relative;
    width: 100%;
    max-width: 420px;
    z-index: 1;
}

/* ==================== Background - Minimal ==================== */
.login-bg {
    display: none;
}

/* ==================== Login Card ==================== */
.login-card {
    background: var(--login-card-bg);
    border: 1px solid var(--login-card-border);
    border-radius: var(--login-radius);
    padding: 32px 28px;
    box-shadow: var(--login-shadow);
}

/* ==================== Login Header ==================== */
.login-header {
    text-align: center;
    margin-bottom: 28px;
}

.login-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    margin: 0 auto 18px;
    min-height: 40px;
}

.login-logo img {
    display: block;
    max-height: 80px;
    max-width: 100%;
    object-fit: contain;
    object-position: center;
}

.login-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--login-text);
    margin-bottom: 6px;
}

.login-subtitle {
    font-size: 0.85rem;
    color: var(--login-text-muted);
}

/* ==================== Login Steps ==================== */
.login-step {
    display: none;
    animation: fadeIn 0.2s ease;
}

.login-step--active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ==================== Form Styles ==================== */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--login-text);
}

.form-label i {
    color: var(--login-primary);
    font-size: 0.8rem;
}

.input-wrapper {
    position: relative;
}

.form-input {
    width: 100%;
    padding: 12px 14px;
    padding-left: 40px;
    background: var(--login-input-bg);
    border: 1px solid var(--login-input-border);
    border-radius: var(--login-radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--login-text);
    transition: var(--login-transition);
    outline: none;
}

.form-input--ltr {
    direction: ltr;
    text-align: left;
    letter-spacing: 1px;
}

.form-input::placeholder {
    color: var(--login-text-muted);
    letter-spacing: 0;
}

.form-input:focus {
    border-color: var(--login-input-focus);
    background: #fff;
}

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

.input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--login-text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

.form-error {
    font-size: 0.75rem;
    color: var(--login-error);
    min-height: 18px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.form-error:empty {
    display: none;
}

/* ==================== OTP Inputs ==================== */
.otp-inputs {
    display: flex;
    gap: 8px;
    justify-content: center;
    direction: ltr;
}

.otp-input {
    width: 44px;
    height: 50px;
    background: var(--login-input-bg);
    border: 1px solid var(--login-input-border);
    border-radius: var(--login-radius-sm);
    font-family: inherit;
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--login-text);
    text-align: center;
    outline: none;
    transition: var(--login-transition);
}

.otp-input:focus {
    border-color: var(--login-primary);
    background: #fff;
}

.otp-input.filled {
    border-color: var(--login-success);
    background: #ecfdf5;
}

.otp-input.error {
    border-color: var(--login-error);
    background: #fef2f2;
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    75% { transform: translateX(4px); }
}

/* ==================== OTP Info ==================== */
.otp-info {
    text-align: center;
    margin-bottom: 20px;
    padding: 14px;
    background: #f0f9ff;
    border-radius: var(--login-radius-sm);
    border: 1px solid #e0f2fe;
}

.otp-info p {
    font-size: 0.85rem;
    color: var(--login-text-muted);
    margin-bottom: 6px;
}

.otp-mobile {
    font-weight: 600;
    color: var(--login-primary);
    direction: ltr;
    display: inline-block;
}

/* ==================== Timer ==================== */
.otp-timer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px;
    background: #fffbeb;
    border-radius: var(--login-radius-sm);
    font-size: 0.8rem;
    color: #b45309;
}

.otp-timer i {
    font-size: 0.85rem;
}

.otp-timer.expired {
    background: #fef2f2;
    color: #dc2626;
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: var(--login-radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--login-transition);
}

.btn-block {
    width: 100%;
}

.btn-primary {
    background: var(--login-primary);
    color: white;
}

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

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

.btn-secondary:hover:not(:disabled) {
    background: #e2e8f0;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-loader {
    display: none;
}

.btn.loading .btn-text {
    display: none;
}

.btn.loading .btn-loader {
    display: inline-flex;
}

.btn-link {
    background: none;
    border: none;
    color: var(--login-primary);
    font-family: inherit;
    font-size: 0.8rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    transition: var(--login-transition);
}

.btn-link:hover {
    color: var(--login-primary-dark);
}

/* ==================== Success Animation ==================== */
.success-animation {
    text-align: center;
    padding: 16px;
}

.success-icon {
    width: 64px;
    height: 64px;
    background: var(--login-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    animation: successPop 0.4s ease;
}

.success-icon i {
    font-size: 1.8rem;
    color: white;
}

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

.success-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--login-success);
    margin-bottom: 6px;
}

.success-message {
    font-size: 0.9rem;
    color: var(--login-text-muted);
}

/* ==================== Login Footer ==================== */
.login-footer {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--login-card-border);
    text-align: center;
}

.login-footer p {
    font-size: 0.75rem;
    color: var(--login-text-muted);
}

.login-footer a {
    color: var(--login-primary);
    text-decoration: none;
}

.login-footer a:hover {
    text-decoration: underline;
}

/* ==================== Back Home ==================== */
.back-home {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    padding: 10px 16px;
    color: var(--login-text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--login-transition);
    border-radius: var(--login-radius-sm);
}

.back-home:hover {
    color: var(--login-text);
    background: rgba(0, 0, 0, 0.04);
}

/* ==================== Toast Notifications ==================== */
.toast-container {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: #fff;
    border: 1px solid var(--login-card-border);
    border-radius: var(--login-radius-sm);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    animation: toastIn 0.2s ease;
    pointer-events: auto;
    min-width: 260px;
    max-width: 360px;
}

.toast.hide {
    animation: toastOut 0.2s ease forwards;
}

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

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

.toast-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.toast--success .toast-icon { color: var(--login-success); }
.toast--error .toast-icon { color: var(--login-error); }
.toast--warning .toast-icon { color: var(--login-warning); }
.toast--info .toast-icon { color: var(--login-primary); }

.toast-message {
    flex: 1;
    font-size: 0.85rem;
    color: var(--login-text);
}

.toast-close {
    background: none;
    border: none;
    color: var(--login-text-muted);
    cursor: pointer;
    padding: 2px;
    font-size: 0.9rem;
    transition: var(--login-transition);
}

.toast-close:hover {
    color: var(--login-text);
}

/* ==================== Responsive ==================== */
@media (max-width: 480px) {
    body {
        padding: 16px;
        align-items: flex-start;
        padding-top: 32px;
    }
    
    .login-container {
        max-width: 100%;
    }
    
    .login-card {
        padding: 28px 20px;
        border-radius: 10px;
    }
    
    .login-header {
        margin-bottom: 22px;
    }
    
    .login-logo {
        min-height: 36px;
        margin-bottom: 14px;
    }
    
    .login-logo img {
        max-height: 60px;
        max-width: 100%;
    }
    
    .login-title {
        font-size: 1.1rem;
    }
    
    .login-subtitle {
        font-size: 0.8rem;
    }
    
    .otp-input {
        width: 40px;
        height: 46px;
        font-size: 1.2rem;
    }
    
    .otp-inputs {
        gap: 6px;
    }
}

/* ==================== Accessibility ==================== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

.btn:focus-visible,
.form-input:focus-visible,
.otp-input:focus-visible,
.btn-link:focus-visible {
    outline: 2px solid var(--login-primary);
    outline-offset: 2px;
}