:root {
    --vh: 100vh;
    --color-brand: #ba0c2f;
    --color-text: #ffffff;
    --color-overlay-1: rgba(0, 0, 0, 0.1);
    --color-overlay-2: rgba(0, 0, 0, 0.3);
    --color-overlay-3: rgba(0, 0, 0, 0.5);
    --transition-base: 0.3s ease;
}

@supports (height: 100dvh) {
    :root {
        --vh: 100dvh;
    }
}

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

body {
    font-family: 'Noto Sans', sans-serif;
    min-height: var(--vh);
    background-color: var(--color-brand);
    color: var(--color-text);
    line-height: 1.6;
    transition: background-color var(--transition-base);
    overflow-x: hidden;
    position: relative;
}

body[dir="rtl"] {
    direction: rtl;
    font-family: 'Noto Kufi Arabic', sans-serif;
}



.background-layer,
.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--vh);
    pointer-events: none;
    transition: var(--transition-base);
    z-index: -1;
}

.background-layer {
    background: url('../img/bg-hero.webp') center/cover no-repeat;
    background-attachment: scroll;
    filter: blur(0px);
    z-index: -2;
    will-change: filter;
}

.background-overlay {
    background: linear-gradient(180deg,
        var(--color-brand) 0%,
        rgba(0, 0, 0, 0.1) 15%,
        var(--color-overlay-2) 50%,
        rgba(0, 0, 0, 0.1) 85%,
        var(--color-brand) 100%);
    opacity: 0;
    will-change: opacity;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: calc(24px + env(safe-area-inset-top, 0px)) 24px calc(48px + env(safe-area-inset-bottom, 0px));
    min-height: calc(var(--vh) - env(safe-area-inset-top, 0px) - env(safe-area-inset-bottom, 0px));
    display: flex;
    flex-direction: column;
    position: relative;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 0;
    margin-bottom: 48px;
    direction: ltr;
}

.logo-img {
    width: 50px;
    height: 50px;
    filter: brightness(0) invert(1);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.nav-buttons {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: 12px;
    direction: ltr;
    margin-left: auto;
}

body[dir="rtl"] .nav-buttons {
    direction: ltr;
    margin-left: auto;
    margin-right: 0;
}

.nav-buttons .btn {
    flex: 0 0 auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 140px;
    height: 48px;
    padding: 12px 24px;
    border-radius: 10px;
    border: none;
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base), opacity var(--transition-base);
    font-family: inherit;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 2px solid #fbbf24;
    outline-offset: 3px;
}

.btn-primary {
    background-color: var(--color-text);
    color: var(--color-brand);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.22);
}

.btn-secondary,
.lang-toggle {
    background: transparent;
    color: var(--color-text);
    border: 2px solid rgba(255, 255, 255, 0.7);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

.lang-toggle {
    font-size: 12px;
    min-width: 70px;
    background: #111111;
    border-color: #111111;
    margin-left: 0;
}

.lang-toggle:hover {
    background: #000000;
    border-color: #000000;
}

.btn.is-loading {
    opacity: 0.7;
    pointer-events: none;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    max-width: 1200px;
    padding: 25vh 0 6vh;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.main-content.loaded {
    opacity: 1;
}

.main-content:focus {
    outline: none;
}

body[dir="rtl"] .main-content {
    text-align: right;
}

.year {
    font-size: 18px;
    letter-spacing: 0.6px;
    margin-bottom: 16px;
    opacity: 0.85;
}

.title {
    font-size: clamp(3rem, 6vw, 4.5rem);
    font-weight: 700;
    margin-bottom: 24px;
    font-family: 'Montserrat', sans-serif;
}

.subtitle {
    font-size: clamp(1.25rem, 3vw, 1.6rem);
    margin-bottom: 28px;
    opacity: 0.9;
}

.description {
    font-size: 1rem;
    margin-bottom: 36px;
    max-width: 760px;
}


.section-content {
    font-size: 1rem;
    line-height: 1.8;
    opacity: 0.88;
    margin-bottom: 40px;
    text-align: left;
}

body[dir="rtl"] .description,
body[dir="rtl"] .section-content {
    text-align: right;
}

body[dir="rtl"] .title {
    font-family: 'Cairo', sans-serif;
}

.curator {
    margin-top: 72px;
    padding-top: 48px;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
}

.curator-name {
    font-size: 1.8rem;
    font-weight: 600;
}

.curator-title {
    font-size: 1rem;
    opacity: 0.75;
    margin-top: 8px;
}

@media (max-width: 900px) {
    .container {
        padding: 18px 18px 40px;
    }

    .main-content {
        padding: 18vh 0 5vh;
    }

    .description,
    .section-content {
        text-align: left;
    }
    
    body[dir="rtl"] .description,
    body[dir="rtl"] .section-content {
        text-align: right;
    }
}

@media (max-width: 768px) {
    .header {
        flex-wrap: nowrap;
    }

    .btn {
        min-width: 120px;
        height: 44px;
        font-size: 13px;
    }

    .nav-buttons {
        gap: 10px;
        margin-left: auto;
        margin-right: 0;
    }

    .main-content {
        padding: 14vh 0 4vh;
    }

    .description,
    .section-content {
        text-align: left;
    }
    
    body[dir="rtl"] .description,
    body[dir="rtl"] .section-content {
        text-align: right;
    }

}

@media (pointer: coarse) {
    .background-layer {
        background-attachment: scroll;
    }
}

@media (max-width: 520px) {
    .header {
        flex-wrap: nowrap;
    }

    .nav-buttons {
        gap: 8px;
        margin-left: auto;
        margin-right: 0;
    }

    .btn {
        min-width: 110px;
        font-size: 12px;
    }

    .lang-toggle {
        min-width: 66px;
    }

    .title {
        font-size: clamp(2.3rem, 12vw, 3.2rem);
    }
}

body[dir="rtl"] .lang-toggle {
    margin-left: 0;
    margin-right: 0;
}

@media (max-width: 768px) {
    body[dir="rtl"] .lang-toggle {
        margin: 0;
    }
}

input[name="website"] {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}