/* ============================================
   SHARED AUTH PAGE DESIGN SYSTEM
   Enterprise-grade, unified login/register UI
   ============================================ */
:root {
    --auth-primary: #3D8B63;
    --auth-primary-dark: #2E6B4C;
    --auth-primary-light: #6AAF8A;
    --auth-secondary: #C4724A;
    --auth-accent: #E8A838;
    --auth-success: #3D8B63;
    --auth-danger: #C85A5A;
    --auth-neutral-dark: #2C3E3A;
    --auth-neutral-medium: #5A6E68;
    --auth-neutral-light: #FAF8F4;
    --auth-white: #FFFFFF;
    --auth-muted: #8A9490;
    --auth-border: #E4DDD2;
    --auth-gradient: linear-gradient(135deg, #3D8B63 0%, #5BAA7E 100%);
    --auth-gradient-hero: linear-gradient(160deg, #1a2e24 0%, #1b3a2a 30%, #2d4a3a 60%, #1a2e24 100%);
    --auth-font: 'Vazirmatn', 'Tahoma', 'Segoe UI', system-ui, sans-serif;
    --auth-radius-sm: 12px;
    --auth-radius-md: 16px;
    --auth-radius-lg: 24px;
    --auth-shadow-sm: 0 2px 12px rgba(61,139,99,0.08);
    --auth-shadow-md: 0 8px 24px rgba(61,139,99,0.12);
    --auth-shadow-lg: 0 16px 40px rgba(0,0,0,0.1);
    --auth-transition-fast: 0.2s cubic-bezier(0.4,0,0.2,1);
    --auth-transition-base: 0.3s cubic-bezier(0.4,0,0.2,1);
}

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

html { height: 100%; direction: rtl; }

body.auth-standalone {
    font-family: var(--auth-font);
    font-size: 16px;
    line-height: 1.7;
    color: var(--auth-neutral-dark);
    height: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    overflow-y: auto;
}

/* === LAYOUT === */
.auth-wrapper {
    display: flex;
    min-height: 100vh;
    min-height: 100dvh;
}

/* Soft page entrance — standalone auth pages don't load style.css/script.js,
   so this CSS-only fade mirrors the public site's page transition.
   Reduced motion gets an opacity-only fade; normal motion also slides up. */
@media (prefers-reduced-motion: no-preference) {
    .auth-wrapper {
        animation: authPageIn 0.45s cubic-bezier(0.16, 1, 0.3, 1) both;
    }
}

@media (prefers-reduced-motion: reduce) {
    .auth-wrapper {
        animation: authFadeOnly 0.45s ease both;
    }
}

@keyframes authPageIn {
    from { opacity: 0; transform: translateY(14px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* === BRAND PANEL (Right-to-Left swap) === */
.auth-brand {
    display: none;
    width: 50%;
    background: var(--auth-gradient-hero);
    position: relative;
    overflow: hidden;
    align-items: flex-start;
    justify-content: center;
    flex-direction: column;
    padding: 60px;
}

@media (min-width: 1024px) {
    .auth-brand { display: flex; }
}

.auth-brand::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(61,139,99,0.2) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(196,114,74,0.15) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(232,168,56,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.auth-brand::after {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    border: 1px solid rgba(61,139,99,0.1);
    pointer-events: none;
}

.auth-brand .brand-circle-1 {
    position: absolute;
    bottom: -60px;
    left: -60px;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: rgba(196,114,74,0.06);
    pointer-events: none;
}

.auth-brand .brand-circle-2 {
    position: absolute;
    top: 20%;
    left: 10%;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(61,139,99,0.08);
    pointer-events: none;
    animation: authFloat 8s ease-in-out infinite;
}

@keyframes authFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.auth-brand-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 440px;
}

.auth-brand-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 32px;
    background: rgba(255,255,255,0.08);
    border-radius: 24px;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    border: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    transition: transform var(--auth-transition-base);
}

.auth-brand-logo:hover { transform: scale(1.05) rotate(-3deg); }

.auth-brand-title {
    color: var(--auth-white);
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 16px;
    line-height: 1.3;
}

.auth-brand-title span {
    background: var(--auth-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.auth-brand-subtitle {
    color: rgba(255,255,255,0.6);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 48px;
}

.auth-brand-features {
    list-style: none;
    text-align: right;
}

.auth-brand-features li {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 0;
    color: rgba(255,255,255,0.8);
    font-size: 0.9375rem;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.auth-brand-features li:last-child { border-bottom: none; }

.auth-feature-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: rgba(61,139,99,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.auth-feature-icon svg { color: var(--auth-primary-light); }

/* === FORM PANEL (Left-to-Right swap) === */
.auth-form-panel {
    flex: 1;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 32px 32px 48px;
    background: var(--auth-white);
    overflow-y: auto;
    position: relative;
}

.auth-form-panel::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(61,139,99,0.04) 0%, transparent 70%);
    pointer-events: none;
}

.auth-form-container {
    width: 100%;
    max-width: 420px;
    position: relative;
    z-index: 1;
}

/* Mobile logo */
.auth-mobile-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

@media (min-width: 1024px) { .auth-mobile-logo { display: none; } }

.auth-mobile-logo-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: var(--auth-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(61,139,99,0.3);
}

.auth-mobile-logo-text {
    font-size: 1.5rem;
    font-weight: 900;
    background: var(--auth-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Form Header */
.auth-header { margin-bottom: 36px; }

.auth-header h1 {
    font-size: 1.75rem;
    font-weight: 900;
    color: var(--auth-neutral-dark);
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.auth-header p {
    color: var(--auth-neutral-medium);
    font-size: 0.9375rem;
    margin: 0;
}

/* Role badge */
.auth-role-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.auth-role-badge--admin {
    background: rgba(61,139,99,0.12);
    color: var(--auth-primary-dark);
}

.auth-role-badge--teacher {
    background: rgba(232,168,56,0.15);
    color: #2C7AB8;
}

.auth-role-badge--parent {
    background: rgba(196,114,74,0.15);
    color: #7B5EA7;
}

/* Alerts */
.auth-alert {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 14px 16px;
    border-radius: var(--auth-radius-sm);
    margin-bottom: 24px;
    font-size: 0.875rem;
    line-height: 1.7;
    word-break: break-word;
    animation: authAlertIn 0.4s ease;
}

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

.auth-alert--success {
    background: rgba(136,216,176,0.1);
    border: 1px solid rgba(136,216,176,0.25);
    color: #1a7a56;
}

.auth-alert--danger {
    background: rgba(255,107,107,0.07);
    border: 1px solid rgba(255,107,107,0.2);
    color: #c53030;
}

.auth-alert-icon { flex-shrink: 0; margin-top: 2px; }

/* Alert list (multiple errors) */
.auth-alert-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.auth-alert-list li {
    position: relative;
    padding-right: 16px;
}

.auth-alert-list li::before {
    content: '\2022';
    position: absolute;
    right: 0;
    top: 0;
    color: inherit;
    opacity: 0.7;
}

/* Input error state */
.auth-input.has-error {
    border-color: rgba(255,107,107,0.5);
    background: rgba(255,107,107,0.04);
}

.auth-input.has-error:focus {
    border-color: #FF6B6B;
    box-shadow: 0 0 0 3px rgba(255,107,107,0.15);
}

/* Form */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.auth-field {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.auth-field-label {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--auth-neutral-dark);
}

.auth-field-label .label-optional {
    color: var(--auth-muted);
    font-weight: 400;
    font-size: 0.8125rem;
}

.auth-field-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.auth-field-icon {
    position: absolute;
    right: 14px;
    color: var(--auth-muted);
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--auth-transition-fast);
    opacity: 0.5;
}

.auth-field-wrap:focus-within .auth-field-icon {
    color: var(--auth-primary);
    opacity: 1;
}

.auth-input {
    width: 100%;
    padding: 14px 44px;
    font-family: var(--auth-font);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--auth-neutral-dark);
    background: var(--auth-neutral-light);
    border: 2px solid transparent;
    border-radius: var(--auth-radius-sm);
    outline: none;
    transition: all var(--auth-transition-fast);
}

.auth-input::placeholder {
    color: var(--auth-muted);
    font-weight: 400;
}

.auth-input:hover {
    background: var(--auth-white);
    border-color: var(--auth-border);
}

.auth-input:focus {
    background: var(--auth-white);
    border-color: var(--auth-primary);
    box-shadow: 0 0 0 4px rgba(61,139,99,0.1);
}

.auth-input.has-error {
    border-color: var(--auth-danger);
    background: rgba(255,139,148,0.03);
}

.auth-input.has-error:focus {
    box-shadow: 0 0 0 4px rgba(255,139,148,0.1);
}

.auth-toggle-pwd {
    position: absolute;
    left: 12px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--auth-muted);
    border-radius: 8px;
    transition: all var(--auth-transition-fast);
    opacity: 0.5;
}

.auth-toggle-pwd:hover {
    color: var(--auth-primary);
    background: rgba(61,139,99,0.08);
    opacity: 1;
}

/* Two column form row */
.auth-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 480px) {
    .auth-form-row { grid-template-columns: 1fr; }
}

/* Submit button */
.auth-submit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 15px 28px;
    font-family: var(--auth-font);
    font-size: 1rem;
    font-weight: 800;
    color: var(--auth-white);
    background: var(--auth-gradient);
    border: none;
    border-radius: var(--auth-radius-sm);
    cursor: pointer;
    transition: all var(--auth-transition-base);
    box-shadow: 0 4px 20px rgba(61,139,99,0.35);
    position: relative;
    overflow: hidden;
    margin-top: 8px;
}

.auth-submit::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--auth-transition-fast);
}

.auth-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(61,139,99,0.45);
    color: var(--auth-white);
}

.auth-submit:hover::before { opacity: 1; }

.auth-submit:active {
    transform: translateY(0);
    box-shadow: 0 4px 16px rgba(61,139,99,0.3);
}

.auth-submit svg {
    flex-shrink: 0;
    transition: transform var(--auth-transition-fast);
}

.auth-submit:hover svg { transform: translateX(-4px); }

.auth-submit.is-loading {
    pointer-events: none;
    opacity: 0.85;
}

.auth-submit.is-loading .auth-spinner {
    display: block;
}

.auth-spinner {
    display: none;
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255,255,255,0.3);
    border-top-color: var(--auth-white);
    border-radius: 50%;
    animation: authSpin 0.7s linear infinite;
}

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

/* Divider */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 4px 0;
    color: var(--auth-muted);
    font-size: 0.8125rem;
}

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

/* Secondary button */
.auth-secondary-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 14px 28px;
    font-family: var(--auth-font);
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--auth-primary-dark);
    background: transparent;
    border: 2px solid var(--auth-border);
    border-radius: var(--auth-radius-sm);
    cursor: pointer;
    transition: all var(--auth-transition-base);
    text-decoration: none;
}

.auth-secondary-btn:hover {
    border-color: var(--auth-primary);
    background: rgba(61,139,99,0.04);
    color: var(--auth-primary-dark);
    transform: translateY(-1px);
}

/* Back link */
.auth-back {
    text-align: center;
    margin-top: 8px;
}

.auth-back a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--auth-muted);
    font-size: 0.8125rem;
    text-decoration: none;
    transition: color var(--auth-transition-fast);
}

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

.auth-back a svg { transition: transform var(--auth-transition-fast); }

.auth-back a:hover svg { transform: translateX(3px); }

/* Footer */
.auth-footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 24px;
    border-top: 1px solid var(--auth-border);
}

.auth-footer p {
    color: var(--auth-muted);
    font-size: 0.75rem;
    margin: 0;
}

/* Entrance animations */
@keyframes authFadeUp {
    from { opacity: 0; transform: translateY(18px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes authFadeRight {
    from { opacity: 0; transform: translateX(24px); }
    to { opacity: 1; transform: translateX(0); }
}

[dir="rtl"] .auth-brand-anim {
    animation-name: authFadeRightRtl;
}

@keyframes authFadeRightRtl {
    from { opacity: 0; transform: translateX(-24px); }
    to { opacity: 1; transform: translateX(0); }
}

.auth-anim-1 { animation: authFadeUp 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.05s both; }
.auth-anim-2 { animation: authFadeUp 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.12s both; }
.auth-anim-3 { animation: authFadeUp 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.20s both; }
.auth-anim-4 { animation: authFadeUp 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.28s both; }
.auth-anim-5 { animation: authFadeUp 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.36s both; }
.auth-anim-6 { animation: authFadeUp 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.44s both; }
.auth-anim-7 { animation: authFadeUp 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.52s both; }
.auth-anim-8 { animation: authFadeUp 0.55s cubic-bezier(0.16, 1, 0.3, 1) 0.60s both; }

.auth-brand-anim { animation: authFadeRight 0.75s cubic-bezier(0.16, 1, 0.3, 1) 0.15s both; }

/* Focus visible */
:focus-visible {
    outline: 2px solid var(--auth-primary);
    outline-offset: 2px;
}

/* Responsive: Tablet */
@media (max-width: 768px) {
    .auth-form-panel { padding: 28px 24px 40px; }
    .auth-form-container { max-width: 100%; }
}

/* Responsive: Mobile */
@media (max-width: 480px) {
    .auth-form-panel { padding: 20px 16px 32px; }
    .auth-header h1 { font-size: 1.4rem; }
    .auth-header { margin-bottom: 24px; }
    .auth-alert { padding: 12px 14px; font-size: 0.8125rem; margin-bottom: 20px; gap: 10px; }
    .auth-alert svg { width: 18px; height: 18px; }
    .auth-form { gap: 16px; }
    .auth-submit { padding: 14px 28px; }
    .auth-form-row { grid-template-columns: 1fr; gap: 16px; }
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--auth-primary-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--auth-primary); }

/* Selection */
::selection { background: var(--auth-primary-light); color: var(--auth-neutral-dark); }
/* === SUBMIT BUTTON LOADING STATE === */
.auth-submit.is-loading {
    pointer-events: none;
    opacity: 0.85;
}

.auth-submit.is-loading .btn-text {
    opacity: 0;
}

.auth-submit.is-loading svg:not(.btn-spinner) {
    display: none;
}

.auth-submit .btn-spinner {
    display: none;
}

.auth-submit.is-loading .btn-spinner {
    display: block;
    width: 22px;
    height: 22px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: authSpin 0.7s linear infinite;
    position: absolute;
}

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

/* === REDUCED MOTION === */
/* Kill looping/movement animations instantly, but keep opacity fades so
   entrance animations still feel smooth (mirrors style.css behavior). */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }

    .auth-wrapper,
    .auth-brand-anim,
    .auth-anim-1, .auth-anim-2, .auth-anim-3,
    .auth-anim-4, .auth-anim-5, .auth-anim-6,
    .auth-anim-7, .auth-anim-8 {
        animation-duration: 0.45s !important;
        animation-name: authFadeOnly !important;
    }

    /* The spinner must keep spinning to signal loading */
    .auth-submit.is-loading .btn-spinner {
        animation-duration: 0.7s !important;
        animation-name: authSpin !important;
        animation-iteration-count: infinite !important;
    }
}

@keyframes authFadeOnly {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* === LANDSCAPE MOBILE === */
@media (max-height: 600px) and (orientation: landscape) {
    .auth-wrapper { min-height: auto; }
    .auth-form-panel { padding: 20px; }
    .auth-header { margin-bottom: 20px; }
    .auth-form { gap: 14px; }
}

/* ============================================
   DESKTOP LAYOUT OVERRIDE (≥ 1024px)
   - Brand panel: LEFT, fixed (no scroll)
   - Form panel:  RIGHT, scrollable
   Must come AFTER base styles to override properly.
   ============================================ */
@media (min-width: 1024px) {
    body.auth-standalone {
        overflow: hidden;       /* Prevent page-level scroll */
    }
    .auth-wrapper {
        height: 100vh;          /* Lock to viewport */
        height: 100dvh;
        overflow: hidden;       /* No wrapper scroll */
    }
    .auth-brand {
        order: 1;               /* LEFT side in RTL */
    }
    .auth-form-panel {
        order: 0;               /* RIGHT side in RTL */
        overflow-y: auto;       /* Scrollable for long forms */
    }
}