/* ==========================================
   Xelora Auth - Premium Split & Native Mobile
   ========================================== */

:root {
    --bg-form: #0a0e17; 
    --bg-hero: #05070a;
    
    --neon-blue: #00f3ff;
    --neon-purple: #7a00ff;
    --neon-pink: #bc13fe;
    --gradient-primary: linear-gradient(135deg, var(--neon-blue) 0%, var(--neon-purple) 100%);

    --border-dim: rgba(255, 255, 255, 0.12);
    --border-focus: var(--neon-blue);

    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.45);

    --space-2: 8px; --space-4: 16px; --space-6: 24px; --space-8: 32px; --space-10: 40px; --space-16: 64px;
    --radius-sharp: 8px; --radius-glass: 16px;
    --transition-base: 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);

    --font-display: 'Orbitron', 'Inter', sans-serif;
    --font-sans: 'Inter', sans-serif;
    --font-body: 'Inter', sans-serif;
}

body.light-mode {
    --bg-form: #ffffff; --bg-hero: #f4f7f9;
    --border-dim: rgba(0, 0, 0, 0.1); --border-focus: #0051ff;
    --text-primary: #0a0e17; --text-secondary: rgba(0, 0, 0, 0.65);
}

body[lang^="ar"] { 
    --font-display: 'Cairo', sans-serif; --font-sans: 'Cairo', sans-serif; --font-body: 'Cairo', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background: #000; color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden; position: relative;
}

/* === Global Desktop Mesh === */
body::before {
    content: ''; position: fixed; inset: -20%; z-index: -2;
    background:
        radial-gradient(ellipse at 80% 20%, rgba(122, 0, 255, 0.25) 0%, transparent 40%),
        radial-gradient(circle at 20% 80%, rgba(0, 243, 255, 0.2) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(188, 19, 254, 0.15) 0%, transparent 50%),
        var(--bg-hero);
    animation: fancyMesh 25s ease-in-out infinite alternate;
}
body.light-mode::before {
    background:
        radial-gradient(ellipse at 80% 20%, rgba(122, 0, 255, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 20% 80%, rgba(0, 243, 255, 0.08) 0%, transparent 40%),
        var(--bg-hero);
}
@keyframes fancyMesh { 0% { transform: scale(1) rotate(0deg); } 50% { transform: scale(1.1) rotate(5deg); } 100% { transform: scale(1) rotate(-5deg); } }

/* === Layout Infrastructure === */
.split-layout { display: flex; width: 100vw; height: 100vh; }

/* === LEFT SIDE === */
.split-left {
    flex: 0 0 45%;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    padding: 32px;
    border-right: 1px solid rgba(255, 255, 255, 0.12);
    background:
        linear-gradient(180deg, rgba(6, 12, 22, 0.28) 0%, rgba(6, 12, 22, 0.18) 26%, rgba(6, 12, 22, 0.74) 100%),
        linear-gradient(90deg, rgba(6, 12, 20, 0.72) 0%, rgba(6, 12, 20, 0.22) 48%, rgba(6, 12, 20, 0.54) 100%),
        url("images/banner.jpg") center center / cover no-repeat;
    --left-text-primary: #ffffff;
    --left-text-secondary: rgba(255, 255, 255, 0.84);
    --left-text-tertiary: rgba(255, 255, 255, 0.68);
}

.split-left::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 50% 24%, rgba(255, 255, 255, 0.12) 0%, transparent 30%),
        radial-gradient(circle at 50% 82%, rgba(0, 243, 255, 0.14) 0%, transparent 34%);
    pointer-events: none;
    z-index: 0;
}

.brand-top {
    display: flex;
    align-items: center;
    margin-top: -3.2px;
    margin-left: -3.2px;
    margin-bottom: 43.2px;
    position: relative;
    z-index: 1;
}

.brand-logo {
    width: 50px;
    height: 50px;
    flex: 0 0 auto;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 14.4px;
    box-shadow: 0 0 15px var(--neon-blue);
    border: 2px solid var(--neon-blue);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.brand-top:hover .brand-logo {
    transform: scale(1.05);
    box-shadow: 0 0 25px var(--neon-blue);
}

.brand-name-small {
    font-family: var(--font-display);
    font-size: clamp(22.32px, calc(2.2vw + 14.4px), 29.52px);
    font-weight: 800;
    line-height: 1.1;
    margin: 0;
    letter-spacing: 1.2px;
    display: inline-block;
    color: var(--left-text-primary);
    text-shadow: 0 0 12px rgba(0, 243, 255, 0.55), 0 0 28px rgba(188, 19, 254, 0.24);
    animation: nav-brand-shimmer 7.5s ease-in-out infinite;
}

[dir="rtl"] .brand-top {
    flex-direction: row-reverse;
    margin-left: 0;
    margin-right: -3.2px;
}

[dir="rtl"] .brand-logo {
    margin-right: 0;
    margin-left: 14.4px;
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
    .brand-name-small {
        background: linear-gradient(
            90deg,
            var(--neon-blue),
            var(--neon-pink),
            var(--neon-purple),
            var(--neon-blue)
        );
        background-size: 220% 100%;
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        color: transparent;
    }
}

@keyframes nav-brand-shimmer {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.desktop-hero-stage {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-end;
    gap: 0;
    position: relative;
    z-index: 10;
    width: 100%;
}

.mobile-hero-art {
    display: none;
    position: relative;
}

.mobile-hero-art__halo {
    position: absolute;
    inset: 0;
    border-radius: 36px;
    background: radial-gradient(circle, rgba(0, 243, 255, 0.2) 0%, rgba(122, 0, 255, 0.12) 48%, transparent 76%);
    filter: blur(28px);
    transform: scale(1.08);
}

.mobile-hero-art__card {
    position: relative;
    width: 100%;
    height: auto;
    overflow: hidden;
}

.mobile-hero-art__image {
    width: 100%;
    height: auto;
    display: block;
    filter: saturate(1.02) contrast(1.03);
}

@keyframes mobileHeroFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.testimonial-block {
    margin: 0;
    position: relative;
    z-index: 10;
    max-width: 480px;
    width: 100%;
    padding: 24px 24px 22px;
    min-height: 204px;
    text-align: left;
    border-radius: 28px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: linear-gradient(180deg, rgba(7, 15, 28, 0.48) 0%, rgba(7, 15, 28, 0.62) 100%);
    backdrop-filter: blur(10px);
    box-shadow: 0 16px 36px rgba(3, 8, 20, 0.24);
}
.quote-mark { font-family: Georgia, serif; font-size: 3.75rem; background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; opacity: 0.16; position: absolute; top: -4px; left: 16px; z-index: -1; line-height: 1; }
.brand-message-panel { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: center; align-items: flex-start; padding: 24px 24px 22px; opacity: 0; transform: translateY(8px); transition: all 0.5s cubic-bezier(0.2, 0.8, 0.2, 1); pointer-events: none; }
.brand-message-panel blockquote { font-size: clamp(1.05rem, 1.3vw, 1.35rem); font-weight: 500; font-family: var(--font-sans); line-height: 1.4; letter-spacing: -0.01em; color: var(--left-text-primary); margin-bottom: 12px; max-width: 23ch; text-shadow: 0 4px 12px rgba(0,0,0,0.34); }
.testimonial-author { font-size: 0.9rem; color: var(--left-text-secondary); font-weight: 500; }

.overlay-left { opacity: 1; transform: translateY(0); pointer-events: auto; position: relative; }
#container.right-panel-active .overlay-left { opacity: 0; transform: translateY(-12px); pointer-events: none; position: absolute; }
#container.right-panel-active .overlay-right { opacity: 1; transform: translateY(0); pointer-events: auto; position: relative; }

.brand-bottom { margin-top: var(--space-8); position: relative; z-index: 10; }
.brand-tagline { font-size: 0.9375rem; color: var(--left-text-tertiary); max-width: 360px; font-weight: 500; text-align: left; margin: 0; }

/* === RIGHT SIDE === */
.split-right {
    flex: 1; background-color: var(--bg-form); position: relative; display: flex; justify-content: center; align-items: center; padding: var(--space-10); overflow-y: auto;
    background-image: radial-gradient(var(--border-dim) 1px, transparent 1px); background-size: 24px 24px; background-position: center;
}
.split-right::before { content: ''; position: absolute; inset: 0; background: radial-gradient(circle at center, transparent 30%, var(--bg-form) 100%); pointer-events: none; }

.auth-toolbar { position: absolute; top: var(--space-8); right: var(--space-8); display: flex; gap: var(--space-4); z-index: 50; }
.theme-btn, .minimal-lang select { background: rgba(255,255,255,0.03); color: var(--text-secondary); border: 1px solid var(--border-dim); border-radius: var(--radius-sharp); padding: 0.4rem 0.8rem; font-family: var(--font-sans); font-size: 0.8125rem; font-weight: 500; cursor: pointer; transition: all var(--transition-base); backdrop-filter: blur(4px); }
.minimal-lang select { appearance: none; -webkit-appearance: none; }
.theme-btn { padding: 0.4rem; width: 34px; height: 34px; display: flex; align-items: center; justify-content: center; }
.theme-btn input { display: none; } .theme-btn .icon-moon { display: block; } .theme-btn .icon-sun { display: none; }
.theme-btn input:checked ~ .icon-moon { display: none; } .theme-btn input:checked ~ .icon-sun { display: block; }
.theme-btn:hover, .minimal-lang select:hover { color: var(--text-primary); border-color: var(--border-focus); }

.form-wrapper { width: 100%; max-width: 380px; position: relative; z-index: 10; margin: auto; }

.form-container { display: none; animation: smoothFade 0.3s ease forwards; }
.sign-in-container { display: block; }
#container.right-panel-active .sign-in-container { display: none; }
#container.right-panel-active .sign-up-container { display: block; }
@keyframes smoothFade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

.form-header { margin-bottom: var(--space-8); text-align: start; }
.form-header h2 { font-family: var(--font-sans); font-size: 1.75rem; font-weight: 600; letter-spacing: -0.03em; margin-bottom: 6px; }
.form-sub { font-size: 0.9375rem; color: var(--text-secondary); }

.auth-form-stack { display: flex; flex-direction: column; gap: var(--space-4); }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label { font-size: 0.8125rem; font-weight: 500; color: var(--text-secondary); text-align: start; }

body[dir="rtl"] .form-header,
body[dir="rtl"] .field label {
    text-align: right;
}

body[dir="rtl"] .form-header h2 {
    letter-spacing: 0;
}

.field input { width: 100%; padding: 0.9rem 1rem; font-family: var(--font-sans); font-size: 0.9375rem; color: var(--text-primary); background: rgba(0,0,0,0.3); border: 1px solid var(--border-dim); border-radius: var(--radius-sharp); transition: all var(--transition-base); }
.light-mode .field input { background: #fafafa; }
.field input::placeholder { color: var(--text-tertiary); }
.field input:hover { border-color: rgba(255,255,255,0.25); background: rgba(0,0,0,0.4); }
.field input:focus { outline: none; background: rgba(0,0,0,0.5); border-color: var(--neon-blue); box-shadow: inset 0 0 0 1px var(--neon-blue), 0 0 15px rgba(0, 243, 255, 0.1); }
.light-mode .field input:focus { background: #fff; box-shadow: inset 0 0 0 1px var(--neon-blue); }

.field-status {
    min-height: 1rem;
    color: var(--text-tertiary);
    font-size: 0.75rem;
    line-height: 1.3;
    text-align: start;
}

.field-status--available { color: #65d69a; }
.field-status--unavailable,
.field-status--invalid { color: #ff746c; }

.error-container { overflow: hidden; }
.error-message { color: #ff453a; font-size: 0.8125rem; font-weight: 500; max-height: 0; opacity: 0; transition: all var(--transition-base); }
.error-message:not(:empty) { max-height: 40px; opacity: 1; margin-top: -4px; padding: 0.5rem; background: rgba(255, 69, 58, 0.1); border-radius: 4px; }

.primary-action-btn { width: 100%; padding: 0.875rem; margin-top: var(--space-4); font-family: var(--font-sans); font-size: 0.9375rem; font-weight: 600; color: #fff; background: var(--gradient-primary); background-size: 200% 200%; border: none; border-radius: var(--radius-sharp); cursor: pointer; transition: all var(--transition-base); animation: btnShimmer 5s linear infinite; box-shadow: 0 4px 15px rgba(122, 0, 255, 0.2); }
@keyframes btnShimmer { 0% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } 100% { background-position: 0% 50%; } }
.primary-action-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(122, 0, 255, 0.4); filter: brightness(1.1); }
.primary-action-btn:active { transform: scale(0.98); }

.oauth-stack {
    display: grid;
    gap: 0.85rem;
}

.google-auth-btn {
    width: 100%;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.7rem;
    padding: 0.84rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: var(--radius-sharp);
    background: rgba(255, 255, 255, 0.96);
    color: #151922;
    font-family: var(--font-sans);
    font-size: 0.94rem;
    font-weight: 700;
    line-height: 1.2;
    text-decoration: none;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base), background var(--transition-base);
}

.google-auth-btn:hover {
    transform: translateY(-1px);
    border-color: rgba(0, 243, 255, 0.36);
    background: #fff;
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.24);
}

.google-auth-btn:focus-visible {
    outline: 2px solid var(--neon-blue);
    outline-offset: 3px;
}

.google-auth-btn i {
    color: #4285f4;
    font-size: 1rem;
}

.auth-divider {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-tertiary);
    font-size: 0.76rem;
    line-height: 1.3;
    text-align: center;
}

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

.light-mode .google-auth-btn {
    border-color: rgba(10, 14, 23, 0.12);
    box-shadow: 0 10px 24px rgba(10, 14, 23, 0.08);
}

.switch-text { text-align: center; padding-top: var(--space-4); font-size: 0.875rem; color: var(--text-secondary); }
.switch-text a { color: var(--text-primary); font-weight: 500; text-decoration: none; margin-inline-start: 6px; transition: color var(--transition-base); }
.switch-text a:hover { color: var(--neon-blue); }

.auth-legal-links {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.45rem;
    color: var(--text-tertiary);
    font-size: 0.78rem;
    line-height: 1.5;
    text-align: center;
}

.auth-legal-links a {
    color: var(--text-secondary);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition-base);
}

.auth-legal-links a:hover {
    color: var(--neon-blue);
}

.legal-acceptance {
    position: relative;
    display: grid;
    gap: 0.55rem;
    padding: 0.85rem 0;
    border: 0;
    border-block: 1px solid var(--border-dim);
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    transition: border-color var(--transition-base);
}

.legal-acceptance:focus-within,
.legal-acceptance:hover {
    border-color: rgba(0, 243, 255, 0.28);
    box-shadow: none;
    transform: none;
}

.legal-acceptance__top {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.legal-acceptance input {
    width: 1.2rem;
    height: 1.2rem;
    margin: 0;
    flex: 0 0 auto;
    accent-color: var(--neon-blue);
    cursor: pointer;
}

.legal-acceptance label {
    display: grid;
    gap: 0.2rem;
    cursor: pointer;
}

.legal-acceptance__title {
    color: var(--text-primary);
    font-size: 0.84rem;
    font-weight: 700;
    letter-spacing: 0;
}

.legal-acceptance__copy {
    color: var(--text-tertiary);
    font-size: 0.76rem;
    line-height: 1.45;
}

.legal-acceptance__links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem 0.9rem;
    padding-inline-start: 1.95rem;
}

.legal-acceptance__links a {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--neon-blue);
    font-size: 0.74rem;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition-base);
}

.legal-acceptance__links a:hover {
    background: transparent;
    color: var(--text-primary);
    transform: none;
}

.legal-acceptance__links i {
    font-size: 0.72rem;
}


/* === NATIVE SWIFT / FLUTTER EXTREME OVERHAUL (MOBILE) === */
@media (max-width: 850px) {
    /* Pure Native Canvas */
    body { background: var(--bg-form); overflow-y: auto; overflow-x: hidden; }
    
    /* We keep the mesh visible for the top half (vertical split) */
    body::before { inset: -20% -20% 50% -20%; }
    
    .split-layout { display: block; height: auto; min-height: 100vh; }
    
    /* Native Launch Area - Top Image Split */
    .split-left {
        width: 100%;
        min-height: clamp(280px, 44vh, 400px);
        padding: 0;
        border: none; background: transparent;
        display: flex; justify-content: flex-start; align-items: flex-end;
        position: sticky; top: 0; z-index: 1;
        overflow: hidden;
    }
    .split-left::before { display: none; }
    
    .brand-top { display: none; }
    .desktop-hero-stage { display: block; }
    .mobile-hero-art {
        display: block;
        position: relative;
        width: calc(100vw + 16px);
        margin: 0 -8px;
        max-width: none;
        aspect-ratio: auto;
        animation: none;
    }
    .mobile-hero-art::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: 0;
        height: 58%;
        background: linear-gradient(180deg, rgba(10, 14, 23, 0) 0%, rgba(10, 14, 23, 0.10) 28%, rgba(10, 14, 23, 0.3) 56%, var(--bg-form) 100%);
        pointer-events: none;
    }
    .mobile-hero-art__halo { display: none; }
    .mobile-hero-art__card { border-radius: 0; }
    .mobile-hero-art__image {
        border-radius: 0;
        width: 100%;
    }
    
    /* Nuke testimonial to prevent clutter */
    .brand-name-small, .testimonial-block, .brand-bottom { display: none; }

    /* The Native Form Canvas - Bottom Sheet that overlaps the image */
    .split-right {
        width: 100%;
        background-color: var(--bg-form);
        background-image: none; /* No dots on mobile */
        padding: calc(var(--space-8) + 14px) var(--space-6) var(--space-10);
        align-items: flex-start;
        position: relative;
        z-index: 3;
        margin-top: -16px;
        min-height: calc(100vh - 14vh);
        border-radius: 38px 38px 0 0;
        box-shadow: 0 -10px 30px rgba(0,0,0,0.28);
        overflow: visible;
    }
    .split-right::before { display: none; }
    .split-right::after {
        content: '';
        position: absolute;
        top: 14px;
        left: 50%;
        transform: translateX(-50%);
        width: 58px;
        height: 6px;
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.18);
        box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06);
    }

    .form-wrapper { width: 100%; max-width: 100%; padding: 0; margin: 0; min-height: 100%; }
    .form-container { width: 100%; min-height: 100%; }

    /* iOS Large Title Typography */
    .form-header { margin-bottom: calc(var(--space-8) + 4px); text-align: start; }
    .form-header h2 { font-size: 2.25rem; font-weight: 700; letter-spacing: -0.04em; margin-bottom: 4px; color: var(--text-primary); }
    .form-sub { font-size: 1rem; color: var(--text-secondary); font-weight: 500; }

    /* Native Breathable Inputs */
    .auth-form-stack { gap: calc(var(--space-6) + 2px); }
    .field input { padding: 1.1rem 1.25rem; font-size: 1rem; background: rgba(255,255,255,0.03); border-color: var(--border-dim); border-radius: 12px; }
    .light-mode .field input { background: rgba(0,0,0,0.03); }
    #login-form,
    #signup-form {
        min-height: calc(100dvh - 8vh);
    }
    #login-form {
        justify-content: flex-start;
    }
    
    .primary-action-btn { padding: 1.1rem; font-size: 1.05rem; border-radius: 12px; margin-top: var(--space-8); box-shadow: 0 4px 15px rgba(122, 0, 255, 0.4); }

    /* Move toolbar natively inside the sheet */
    .auth-toolbar { position: absolute; top: calc(var(--space-6) + 2px); right: var(--space-6); width: auto; justify-content: flex-end; padding: 0; }
    .theme-btn, .minimal-lang select { border: none; background: transparent; padding: 0; font-size: 1rem; }
    .theme-btn { width: auto; height: auto; }
}

@media (max-width: 380px) {
    .split-left { min-height: clamp(240px, 40vh, 340px); }
    .split-right { padding: calc(var(--space-6) + 10px) var(--space-4) var(--space-8); }
    .form-header h2 { font-size: 1.8rem; }
    .mobile-hero-art { width: calc(100vw + 10px); margin: 0 -5px; max-width: none; }
    #login-form,
    #signup-form { min-height: calc(100dvh - 6vh); }
}

@media (prefers-reduced-motion: reduce) {
    .mobile-hero-art {
        animation: none;
    }
}