/* ════════════════════════════════════════════════════
   FONTS
════════════════════════════════════════════════════ */
@font-face {
    font-family: 'almarai';
    src: url('../fonts/almarai/Almarai-Light.ttf') format('truetype');
    font-display: swap;
}

@font-face {
    font-family: 'avatrfont';
    src: url('../Fonts/Avatr/AVATRFont-Light.ttf') format('truetype');
    font-display: swap;
}

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

/* ════════════════════════════════════════════════════
   CSS VARIABLES
════════════════════════════════════════════════════ */
:root {
    --accent: #4a9eff;
    --accent2: #7ec8ff;
    --white: #ffffff;
    --white-dim: rgba(255,255,255,0.7);
    --white-faint: rgba(255,255,255,0.12);
    --glow: rgba(74,158,255,0.35);
    --card-bg: rgba(10,22,60,0.55);
    --card-bg-h: rgba(26,48,112,0.75);
    /* fluid spacing — يتكيف مع كل الشاشات */
    --space-xs: clamp(8px, 1.5vw, 16px);
    --space-sm: clamp(12px, 2vw, 24px);
    --space-md: clamp(20px, 3.5vw, 48px);
    --space-lg: clamp(30px, 6vw, 80px);
}

/* ════════════════════════════════════════════════════
   BASE
════════════════════════════════════════════════════ */
html, body {
    height: 100%;
    font-family: 'avatrfont', sans-serif;
    color: var(--white);
    overflow: hidden;
    background: #0a1628;
}

/* ════════════════════════════════════════════════════
   BACKGROUND
════════════════════════════════════════════════════ */
.bg {
    position: fixed;
    inset: 0;
    z-index: 0;
    background-image: url('../images/catalog/Background.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.bg-overlay {
    position: fixed;
    inset: 0;
    z-index: 0;
}

/* ════════════════════════════════════════════════════
   SCREENS
════════════════════════════════════════════════════ */
.screen {
    position: fixed;
    inset: 0;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: clamp(16px, 5vw, 60px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .6s ease;
}

    .screen.active {
        opacity: 1;
        pointer-events: all;
    }

/* ════════════════════════════════════════════════════
   SCREEN HOME
════════════════════════════════════════════════════ */
#screen-home .brand-title {
    margin-bottom: var(--space-lg);
    text-align: center;
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity .7s .3s ease, transform .7s .3s ease;
}

    #screen-home .brand-title img {
        width: clamp(130px, 22vw, 280px);
        height: auto;
    }

#screen-home.active .brand-title {
    opacity: 1;
    transform: translateY(0);
}

/* ── Logo row ── */
.logos-row {
    display: flex;
    gap: var(--space-md);
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
}

.logo-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    cursor: pointer;
    opacity: 0;
    transform: translateY(30px);
    padding: clamp(14px, 2.5vw, 28px);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    border: 1px solid transparent;
    transition: opacity .6s ease, transform .6s ease, background .3s, border-color .3s;
}

#screen-home.active .logo-card:nth-child(1) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: .50s;
}

#screen-home.active .logo-card:nth-child(2) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: .65s;
}

#screen-home.active .logo-card:nth-child(3) {
    opacity: 1;
    transform: translateY(0);
    transition-delay: .80s;
}

.logo-card:hover {
    background: rgba(26,48,112,0.6);
    border-color: rgba(74,158,255,.3);
}

.logo-icon {
    width: clamp(80px, 14vw, 160px);
    height: clamp(80px, 14vw, 160px);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: filter .3s, transform .3s;
}

    .logo-icon img {
        width: 100%;
        height: auto;
        object-fit: contain;
        display: block;
    }

.logo-card:hover .logo-icon {
    filter: drop-shadow(0 0 22px var(--glow));
    transform: scale(1.08);
}

/* حجم خاص لكل لوغو */
.nevo-logo {
    width: 75% !important;
}

.deepal-logo {
    width: 88% !important;
}

/* ── Welcome text ── */
.welcome-text {
    margin-top: var(--space-lg);
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .6s 1s ease, transform .6s 1s ease;
}

#screen-home.active .welcome-text {
    opacity: 1;
    transform: translateY(0);
}

.welcome-ar {
    font-family: 'almarai', sans-serif;
    font-size: clamp(.95rem, 2.5vw, 1.6rem);
    color: var(--white);
    margin-bottom: 8px;
    text-shadow: 0 2px 12px rgba(0,0,0,.5);
}

.welcome-en {
    font-family: 'avatrfont', sans-serif;
    font-size: clamp(.55rem, 1.2vw, .85rem);
    color: var(--white);
    letter-spacing: .05em;
}

/* ════════════════════════════════════════════════════
   SHIMMER LINE
════════════════════════════════════════════════════ */
.shimmer-line {
    width: clamp(40px, 8vw, 80px);
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    margin: 0 auto clamp(16px, 3vh, 36px);
    opacity: 0;
    animation: shimmer 2s 1.5s ease forwards;
}

@keyframes shimmer {
    to {
        opacity: 1;
    }
}

/* ════════════════════════════════════════════════════
   PARTICLES & SCAN
════════════════════════════════════════════════════ */
.scan-overlay {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.particles {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0;
    animation: float var(--dur) var(--del) ease-in-out infinite alternate;
}

@keyframes float {
    0% {
        opacity: 0;
        transform: translateY(0) scale(1);
    }

    50% {
        opacity: .4;
    }

    100% {
        opacity: 0;
        transform: translateY(-60px) scale(1.5);
    }
}

/* ════════════════════════════════════════════════════
   RIPPLE
════════════════════════════════════════════════════ */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,.2);
    transform: scale(0);
    opacity: 1;
    pointer-events: none;
    animation: ripple-out .6s ease forwards;
}

@keyframes ripple-out {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* ════════════════════════════════════════════════════
   BACK BUTTON
════════════════════════════════════════════════════ */
.back-btn {
    position: fixed;
    top: clamp(12px, 2.5vw, 26px);
    left: clamp(12px, 2.5vw, 26px);
    z-index: 200;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: opacity .4s, background .2s;
    background: var(--white-faint);
    border: 1px solid rgba(255,255,255,.2);
    padding: clamp(8px,1.5vw,12px) clamp(12px,2vw,20px);
    border-radius: 40px;
    backdrop-filter: blur(12px);
}

    .back-btn.visible {
        opacity: 1;
        pointer-events: all;
    }

    .back-btn:hover {
        background: rgba(255,255,255,.22);
    }

    .back-btn svg {
        width: clamp(13px,2vw,17px);
        height: clamp(13px,2vw,17px);
        flex-shrink: 0;
    }

    .back-btn span {
        font-size: clamp(.6rem,1.2vw,.8rem);
        letter-spacing: .2em;
        color: var(--white);
    }

/* ════════════════════════════════════════════════════
   SCREEN BRAND — brand header (logo top-center)
════════════════════════════════════════════════════ */
.brand-header {
    position: absolute;
    top: clamp(14px, 3.5vh, 36px);
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    opacity: 0;
    pointer-events: none;
    transition: opacity .5s .2s ease;
}

#screen-brand.active .brand-header {
    opacity: 1;
}

.brand-header img {
    height: clamp(28px, 5.5vh, 65px);
    width: auto;
    max-width: 50vw;
    object-fit: contain;
    filter: brightness(0) invert(1); /* احذف هذا لو الصور ملونة */
}

/* ════════════════════════════════════════════════════
   MODELS GRID
════════════════════════════════════════════════════ */
.models-grid {
    display: grid;
    /* عمودان كحد أدنى، يكبران تلقائياً */
    grid-template-columns: repeat(auto-fit, minmax(clamp(120px, 18vw, 240px), 1fr));
    gap: var(--space-sm);
    width: 100%;
    max-width: min(94vw, 880px);
    /* مسافة عن لوغو البراند في الأعلى */
    margin-top: clamp(55px, 10vh, 100px);
    justify-items: center;
}

.model-card {
    width: 100%;
    max-width: clamp(130px, 22vw, 270px);
    aspect-ratio: 1;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: clamp(8px, 1.5vw, 14px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: clamp(6px, 1.2vh, 14px);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateY(28px) scale(.97);
    transition: opacity .55s ease, transform .55s ease, background .3s, border-color .3s, box-shadow .3s;
}

/* stagger لـ 6 بطاقات */
#screen-brand.active .model-card:nth-child(1) {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition-delay: .30s;
}

#screen-brand.active .model-card:nth-child(2) {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition-delay: .42s;
}

#screen-brand.active .model-card:nth-child(3) {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition-delay: .54s;
}

#screen-brand.active .model-card:nth-child(4) {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition-delay: .66s;
}

#screen-brand.active .model-card:nth-child(5) {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition-delay: .78s;
}

#screen-brand.active .model-card:nth-child(6) {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition-delay: .90s;
}

.model-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 120%, rgba(74,158,255,.2) 0%, transparent 65%);
    opacity: 0;
    transition: opacity .4s;
}

.model-card:hover::before {
    opacity: 1;
}

.model-card:hover {
    background: var(--card-bg-h);
    border-color: rgba(74,158,255,.4);
    transform: translateY(-5px) scale(1.03) !important;
    box-shadow: 0 18px 48px rgba(0,0,0,.5), 0 0 28px rgba(74,158,255,.22);
}

.model-name {
    font-family: 'avatrfont', sans-serif;
    font-size: clamp(.95rem, 3.5vw, 2rem);
    font-weight: bold;
    letter-spacing: .05em;
    color: var(--white);
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 0 8px;
    line-height: 1.2;
}

.model-sub {
    font-size: clamp(.45rem, .9vw, .7rem);
    letter-spacing: .25em;
    color: var(--accent2);
    text-align: center;
    opacity: 0;
    transition: opacity .3s;
    position: relative;
    z-index: 1;
}

.model-card:hover .model-sub {
    opacity: 1;
}

/* PDF badge */
.pdf-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(74,158,255,.22);
    border: 1px solid rgba(74,158,255,.45);
    border-radius: 6px;
    padding: 3px 7px;
    font-size: clamp(.42rem, .8vw, .6rem);
    letter-spacing: .1em;
    color: var(--accent2);
    z-index: 2;
    opacity: 0;
    transition: opacity .3s;
}

.model-card:hover .pdf-badge {
    opacity: 1;
}

/* Site tag */
.site-tag {
    position: fixed;
    bottom: clamp(46px, 7vh, 76px);
    left: 50%;
    transform: translateX(-50%);
    font-size: clamp(.48rem, .9vw, .7rem);
    letter-spacing: .2em;
    color: var(--white-dim);
    z-index: 50;
    opacity: 0;
    transition: opacity .5s 1.2s;
    white-space: nowrap;
}

#screen-brand.active .site-tag {
    opacity: 1;
}

/* ════════════════════════════════════════════════════
   PDF POPUP — FULLSCREEN, NO CONTROLS
════════════════════════════════════════════════════ */
.pdf-backdrop {
    position: fixed;
    inset: 0;
    z-index: 500;
    background: #000;
    opacity: 0;
    pointer-events: none;
    transition: opacity .4s ease;
}

    .pdf-backdrop.open {
        opacity: 1;
        pointer-events: all;
    }

.pdf-modal {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    background: #000;
}

.pdf-body {
    flex: 1;
    position: relative;
    overflow: hidden;
}

/* Placeholder */
.pdf-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: clamp(12px, 2.5vh, 22px);
    color: var(--white-dim);
    text-align: center;
    padding: clamp(20px, 5vw, 60px);
    background: #0a1628;
}

    .pdf-placeholder svg {
        width: clamp(40px, 8vw, 64px);
        height: auto;
        opacity: .4;
    }

    .pdf-placeholder h3 {
        font-size: clamp(.9rem, 2.5vw, 1.4rem);
        font-weight: 300;
        letter-spacing: .2em;
        color: #fff;
    }

    .pdf-placeholder p {
        font-size: clamp(.6rem, 1.2vw, .8rem);
        opacity: .6;
        max-width: 340px;
        line-height: 1.7;
    }

/* iframe */
.pdf-iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: none;
    display: none;
}

    .pdf-iframe.loaded {
        display: block;
    }

/* زر الإغلاق العائم */
.pdf-close-float {
    position: fixed;
    top: clamp(12px, 2.5vw, 22px);
    left: clamp(12px, 2.5vw, 22px);
    z-index: 600;
    width: clamp(38px, 5vw, 52px);
    height: clamp(38px, 5vw, 52px);
    border-radius: 50%;
    background: rgba(10,22,60,0.88);
    border: 1.5px solid rgba(255,255,255,.25);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background .2s, transform .2s;
}

    .pdf-close-float:hover {
        background: rgba(200,40,40,.78);
        transform: scale(1.1);
    }

    .pdf-close-float svg {
        width: clamp(15px, 2.5vw, 21px);
        height: clamp(15px, 2.5vw, 21px);
    }

/* ════════════════════════════════════════════════════
   IDLE TIMER
════════════════════════════════════════════════════ */
.idle-bar-wrap {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    z-index: 300;
    background: rgba(255,255,255,.06);
    opacity: 0;
    transition: opacity .4s;
}

    .idle-bar-wrap.counting {
        opacity: 1;
    }

.idle-bar {
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, var(--accent2), var(--accent));
    transform-origin: left;
    transform: scaleX(1);
    transition: transform linear;
}

.idle-toast {
    position: fixed;
    bottom: clamp(12px, 3vw, 28px);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(10,22,60,0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(74,158,255,.3);
    border-radius: 40px;
    padding: clamp(8px,1.5vw,12px) clamp(16px,3vw,26px);
    font-size: clamp(.55rem, 1.1vw, .75rem);
    letter-spacing: .15em;
    color: var(--white-dim);
    z-index: 300;
    white-space: nowrap;
    opacity: 0;
    transition: opacity .4s;
    pointer-events: none;
}

    .idle-toast.visible {
        opacity: 1;
    }

    .idle-toast span {
        color: var(--accent2);
        font-weight: 700;
    }

/* ════════════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
════════════════════════════════════════════════════ */

/* ── 4K / Large screens ── */
@media (min-width: 2000px) {
    .models-grid {
        max-width: 1400px;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    }

    .model-name {
        font-size: 2.4rem;
    }

    .brand-header img {
        height: 80px;
    }
}

/* ── Desktop ── */
@media (max-width: 1400px) {
    .models-grid {
        max-width: 90vw;
    }
}

/* ── Tablet landscape ── */
@media (max-width: 1024px) {
    .models-grid {
        grid-template-columns: repeat(auto-fit, minmax(clamp(110px, 19vw, 210px), 1fr));
        max-width: 92vw;
    }
}

/* ── Tablet portrait ── */
@media (max-width: 768px) {
    .logos-row {
        gap: clamp(12px, 3vw, 28px);
    }

    .logo-icon {
        width: clamp(65px, 16vw, 120px);
        height: clamp(65px, 16vw, 120px);
    }

    .models-grid {
        grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
        gap: clamp(10px, 2vw, 16px);
        max-width: 95vw;
        margin-top: clamp(52px, 10vh, 88px);
    }

    .model-card {
        max-width: 100%;
    }

    .brand-header img {
        height: clamp(26px, 5vh, 48px);
    }

    .back-btn span {
        display: none;
    }

    .back-btn {
        padding: 10px 12px;
    }
}

/* ── Mobile landscape ── */
@media (max-height: 500px) and (orientation: landscape) {
    .screen {
        justify-content: flex-start;
        padding-top: clamp(56px, 11vh, 90px);
    }

    .logos-row {
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 6px;
    }

    .logo-card {
        flex-shrink: 0;
    }

    .logo-icon {
        width: 60px;
        height: 60px;
    }

    .welcome-text {
        margin-top: 16px;
    }

    .models-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        margin-top: 48px;
    }

    .brand-header img {
        height: 28px;
    }
}

/* ── Mobile portrait ── */
@media (max-width: 480px) {
    #screen-home .brand-title img {
        width: clamp(110px, 52vw, 190px);
    }

    .logos-row {
        gap: 14px;
        flex-wrap: wrap;
    }

    .logo-card {
        padding: 12px 14px;
        border-radius: 12px;
    }

    .logo-icon {
        width: 72px;
        height: 72px;
    }

    .welcome-ar {
        font-size: clamp(.9rem, 4.5vw, 1.2rem);
    }

    .welcome-en {
        font-size: clamp(.5rem, 2.8vw, .72rem);
    }

    .models-grid {
        /* دائماً عمودان على الموبايل */
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
        max-width: 96vw;
        margin-top: clamp(48px, 10vh, 78px);
    }

    .model-card {
        max-width: 100%;
        border-radius: 10px;
    }

    .model-name {
        font-size: clamp(.85rem, 5vw, 1.3rem);
    }

    .back-btn {
        padding: 9px 11px;
    }

        .back-btn span {
            display: none;
        }

    .pdf-close-float {
        width: 40px;
        height: 40px;
        top: 10px;
        left: 10px;
    }

    .idle-toast {
        font-size: clamp(.52rem, 3vw, .7rem);
        white-space: normal;
        text-align: center;
        max-width: 80vw;
    }
}

/* ── Very small (320px) ── */
@media (max-width: 360px) {
    .logo-icon {
        width: 58px;
        height: 58px;
    }

    .logos-row {
        gap: 10px;
    }

    .models-grid {
        gap: 8px;
    }

    .model-name {
        font-size: clamp(.78rem, 5vw, 1rem);
    }
}


/* ════ PDF.js — canvas viewer ════ */

.pdf-canvas-wrap {
    position: absolute;
    inset: 0;
    bottom: 56px;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    background: #1a1a1a;
    display: block;
}

    .pdf-canvas-wrap canvas {
        display: block;
        margin: 0 auto;
        width: 70% !important;
        height: auto !important;
    }

.pdf-nav {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 56px;
    background: rgba(13,5,32,0.95);
    border-top: 1px solid rgba(155,89,255,.2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(16px, 4vw, 40px);
    z-index: 10;
}

.pdf-nav-btn {
    width: clamp(40px, 6vw, 54px);
    height: clamp(40px, 6vw, 54px);
    border-radius: 50%;
    background: rgba(155,89,255,.18);
    border: 1px solid rgba(155,89,255,.4);
    color: #fff;
    font-size: clamp(1.3rem, 3vw, 1.9rem);
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .2s, transform .15s;
    -webkit-tap-highlight-color: transparent;
}

    .pdf-nav-btn:hover:not(:disabled) {
        background: rgba(155,89,255,.38);
        transform: scale(1.08);
    }

    .pdf-nav-btn:disabled {
        opacity: .3;
        cursor: default;
    }

.pdf-nav-info {
    font-family: 'avatrfont', sans-serif;
    font-size: clamp(.7rem, 1.8vw, 1rem);
    letter-spacing: .15em;
    color: rgba(255,255,255,.7);
    min-width: 80px;
    text-align: center;
}

.pdf-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(155,89,255,.2);
    border-top-color: rgba(155,89,255,.9);
    border-radius: 50%;
    animation: spin .8s linear infinite;
    margin-bottom: 8px;
}

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

@media (max-width: 480px) {
    .pdf-nav {
        height: 50px;
        gap: 20px;
    }

    .pdf-nav-btn {
        width: 38px;
        height: 38px;
        font-size: 1.2rem;
    }

    .pdf-nav-info {
        font-size: .7rem;
        min-width: 60px;
    }

    .pdf-canvas-wrap {
        bottom: 50px;
    }
}

.pdf-canvas-wrap {
    bottom: 0 !important;
}

.pdf-nav {
    display: none !important;
}