/* ====== الخلفية والصفحة ====== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    min-height: 100vh;
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--auth-bg, #0d0820);
    overflow-x: hidden;
    position: relative;
}

/* متغيرات الألوان */
:root {
    --auth-bg: #0d0820;
    --auth-card: rgba(255,255,255,0.06);
    --auth-card-border: rgba(255,255,255,0.12);
    --auth-text: #f0e8ff;
    --auth-muted: rgba(240,232,255,0.55);
    --auth-input-bg: rgba(255,255,255,0.07);
    --auth-input-border: rgba(255,255,255,0.15);
    --auth-accent: #b57bee;
    --auth-accent2: #f472b6;
    --auth-tab-active: rgba(181,123,238,0.2);
    --auth-btn-from: #7c3aed;
    --auth-btn-to: #db2777;
    --auth-shadow: 0 32px 80px rgba(124,58,237,0.35);
}
[data-theme="dark"] {
    --auth-bg: #0a0515;
    --auth-card: rgba(255,255,255,0.04);
    --auth-card-border: rgba(255,255,255,0.09);
}

/* ====== خلفية متحركة ====== */
.auth-bg-wrap {
    position: fixed;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}
.auth-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.45;
    animation: orbFloat 12s ease-in-out infinite;
}
.auth-orb:nth-child(1) {
    width: 520px; height: 520px;
    background: radial-gradient(circle, #7c3aed, transparent 70%);
    top: -120px; left: -100px;
    animation-delay: 0s;
}
.auth-orb:nth-child(2) {
    width: 420px; height: 420px;
    background: radial-gradient(circle, #db2777, transparent 70%);
    bottom: -100px; right: -80px;
    animation-delay: -4s;
}
.auth-orb:nth-child(3) {
    width: 300px; height: 300px;
    background: radial-gradient(circle, #0ea5e9, transparent 70%);
    top: 50%; left: 55%;
    animation-delay: -8s;
    opacity: 0.25;
}
@keyframes orbFloat {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33%       { transform: translate(30px, -40px) scale(1.06); }
    66%       { transform: translate(-20px, 25px) scale(0.95); }
}

/* ====== نجوم صغيرة ====== */
.stars {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}
.star {
    position: absolute;
    border-radius: 50%;
    background: #fff;
    opacity: 0;
    animation: starTwinkle var(--dur, 3s) ease-in-out infinite var(--delay, 0s);
}
@keyframes starTwinkle {
    0%, 100% { opacity: 0; transform: scale(0.5); }
    50%       { opacity: var(--max-op, 0.7); transform: scale(1); }
}

/* ====== إيموجيات عائمة ====== */
.float-emojis {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}
.float-emoji {
    position: absolute;
    font-size: 2rem;
    opacity: 0;
    animation: floatUp var(--dur, 12s) ease-in infinite var(--delay, 0s);
    user-select: none;
}
@keyframes floatUp {
    0%   { transform: translateY(110vh) rotate(0deg) scale(0.6); opacity: 0; }
    10%  { opacity: 0.4; }
    90%  { opacity: 0.3; }
    100% { transform: translateY(-10vh) rotate(360deg) scale(1.1); opacity: 0; }
}

/* ====== تخطيط الصفحة ====== */
.auth-page {
    position: relative;
    z-index: 2;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1rem;
    gap: 3rem;
}

/* ====== الجانب الأيسر — التسويق ====== */
.auth-hero {
    flex: 1;
    max-width: 420px;
    color: var(--auth-text);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.auth-logo-wrap {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
}
.auth-logo-wrap span { font-size: 2rem; }
/* شارة +0 داخل اللوگو (نتجاوز حجم 2rem العام) */
.auth-logo-wrap .brand-plus {
    font-size: 1rem;
    font-weight: 800;
    color: #ffb3c8;
    background: rgba(255,255,255,0.12);
    border-radius: 8px;
    padding: 0 6px;
    vertical-align: super;
    letter-spacing: 0.5px;
}
/* التاگلاين تحت اللوگو */
.auth-tagline {
    color: rgba(255,255,255,0.72);
    font-size: 0.9rem;
    font-style: italic;
    letter-spacing: 0.4px;
    margin: 4px 0 10px;
}
.auth-hero h1 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 900;
    line-height: 1.2;
    background: linear-gradient(135deg, #e879f9, #818cf8, #38bdf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.auth-hero p {
    font-size: 1.05rem;
    color: var(--auth-muted);
    line-height: 1.7;
}
.auth-features {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.5rem;
}
.auth-feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.95rem;
    color: var(--auth-muted);
}
.auth-feature-icon {
    width: 36px; height: 36px;
    border-radius: 10px;
    background: rgba(255,255,255,0.08);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

/* ====== البطاقة الرئيسية ====== */
.auth-card-wrap {
    perspective: 1000px;
    flex-shrink: 0;
    width: 100%;
    max-width: 440px;
}
.auth-card {
    background: var(--auth-card);
    border: 1px solid var(--auth-card-border);
    border-radius: 24px;
    padding: 0;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: var(--auth-shadow);
    transform-style: preserve-3d;
    transition: transform 0.08s ease-out, box-shadow 0.3s;
    overflow: hidden;
    position: relative;
}
.auth-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, #7c3aed, #db2777, #0ea5e9);
    z-index: 1;
}

/* ====== التبويبات ====== */
.auth-tabs {
    display: flex;
    position: relative;
    border-bottom: 1px solid var(--auth-card-border);
}
.auth-tab {
    flex: 1;
    padding: 1.1rem;
    background: none;
    border: none;
    color: var(--auth-muted);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: color 0.25s, background 0.25s;
    position: relative;
    letter-spacing: 0.02em;
}
.auth-tab:hover { color: var(--auth-text); }
.auth-tab.active { color: var(--auth-text); background: var(--auth-tab-active); }
.auth-tab.active::after {
    content: '';
    position: absolute;
    bottom: -1px; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--auth-btn-from), var(--auth-btn-to));
}

/* ====== الفورم ====== */
.auth-forms-area {
    padding: 1.8rem 2rem 2rem;
}
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.auth-form.hidden { display: none; }
.auth-form.slide-in {
    animation: slideIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}
@keyframes slideIn {
    from { opacity: 0; transform: translateY(18px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0)    scale(1); }
}

/* ====== حقول الإدخال ====== */
.field-group { display: flex; flex-direction: column; gap: 0.4rem; }
.field-label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--auth-muted);
    text-transform: uppercase;
    letter-spacing: 0.07em;
}
.field-input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--auth-input-bg);
    border: 1px solid var(--auth-input-border);
    border-radius: 12px;
    color: var(--auth-text);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}
.field-input::placeholder { color: var(--auth-muted); }
.field-input:focus {
    border-color: var(--auth-accent);
    background: rgba(255,255,255,0.1);
    box-shadow: 0 0 0 3px rgba(181,123,238,0.18);
}

/* ====== اختيار الجنس ====== */
.gender-row, .style-row { display: flex; gap: 0.5rem; }
.gender-btn, .style-btn {
    flex: 1;
    padding: 0.6rem 0.4rem;
    background: var(--auth-input-bg);
    border: 1px solid var(--auth-input-border);
    border-radius: 10px;
    color: var(--auth-muted);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    font-weight: 500;
}
.gender-btn:hover, .style-btn:hover {
    border-color: var(--auth-accent);
    color: var(--auth-text);
}
.gender-btn.active, .style-btn.active {
    border-color: var(--auth-accent);
    background: rgba(181,123,238,0.18);
    color: var(--auth-text);
}

/* ====== زر الدخول ====== */
.auth-btn {
    width: 100%;
    padding: 0.85rem;
    background: linear-gradient(135deg, var(--auth-btn-from), var(--auth-btn-to));
    border: none;
    border-radius: 12px;
    color: #fff;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
    box-shadow: 0 4px 20px rgba(124,58,237,0.4);
    margin-top: 0.3rem;
    letter-spacing: 0.02em;
}
.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(124,58,237,0.55);
}
.auth-btn:active { transform: translateY(0); }

/* ====== فاصل "أو" ====== */
.auth-divider {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0.3rem 0;
}
.auth-divider::before, .auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--auth-card-border);
}
.auth-divider span {
    font-size: 0.8rem;
    color: var(--auth-muted);
    white-space: nowrap;
}

/* ====== أزرار التواصل الاجتماعي ====== */
.social-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
}
.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 0.8rem;
    background: var(--auth-input-bg);
    border: 1px solid var(--auth-input-border);
    border-radius: 10px;
    color: var(--auth-muted);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}
.social-btn:hover {
    border-color: var(--auth-accent);
    color: var(--auth-text);
    background: rgba(255,255,255,0.1);
    transform: translateY(-1px);
}
.social-icon { font-size: 1.1rem; }

/* ====== تبديل التبويب ====== */
.auth-switch {
    text-align: center;
    font-size: 0.87rem;
    color: var(--auth-muted);
    margin-top: 0.2rem;
}
.auth-switch a { color: var(--auth-accent); text-decoration: none; font-weight: 600; }
.auth-switch a:hover { text-decoration: underline; }

/* ====== زر الضيف ====== */
.auth-guest {
    display: block;
    text-align: center;
    padding: 1rem 2rem 1.4rem;
    border-top: 1px solid var(--auth-card-border);
}
.auth-guest a {
    color: var(--auth-muted);
    font-size: 0.87rem;
    text-decoration: none;
    transition: color 0.2s;
}
.auth-guest a:hover { color: var(--auth-text); }

/* ====== رسائل الخطأ والنجاح ====== */
.auth-msg {
    padding: 0.8rem 1rem;
    border-radius: 10px;
    font-size: 0.9rem;
    margin: 0 2rem;
    margin-bottom: -0.5rem;
    margin-top: 1.2rem;
    font-weight: 500;
}
.auth-error {
    background: rgba(220,38,38,0.15);
    border: 1px solid rgba(220,38,38,0.3);
    color: #fca5a5;
}
.auth-success {
    background: rgba(34,197,94,0.12);
    border: 1px solid rgba(34,197,94,0.25);
    color: #86efac;
}

/* ====== وضع الداكن ====== */
[data-theme="dark"] .auth-card {
    background: rgba(0,0,0,0.35);
    border-color: rgba(255,255,255,0.07);
}

/* ====== استجابة الشاشات الصغيرة ====== */
@media (max-width: 800px) {
    .auth-hero { display: none; }
    .auth-page { padding: 1.5rem 1rem; }
    .auth-forms-area { padding: 1.5rem 1.4rem 1.6rem; }
    .auth-msg { margin: 0 1.4rem; margin-bottom: -0.5rem; margin-top: 1rem; }
    .auth-guest { padding: 0.8rem 1.4rem 1.2rem; }
}
@media (max-width: 420px) {
    .social-row { grid-template-columns: 1fr 1fr; }
}

/* ====== كلمات تسويقية متحركة ====== */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.85rem;
    background: rgba(124,58,237,0.18);
    border: 1px solid rgba(124,58,237,0.35);
    border-radius: 999px;
    font-size: 0.82rem;
    color: #c4b5fd;
    font-weight: 600;
    width: fit-content;
}