:root {
    /* Color Palette */
    --primary: #003163;
    --primary-container: #01478B;
    --secondary: #00658f;
    --secondary-container: #33BBFF;
    --secondary-fixed-dim: #85cfff;

    /* Surfaces */
    --surface: #ffffff;
    --surface-glass: rgba(255, 255, 255, 0.65);
    --surface-container-low: rgba(255, 255, 255, 0.75);
    --surface-container-highest: rgba(255, 255, 255, 0.85);

    /* Typography Types in LTR */
    --font-heading: 'Plus Jakarta Sans', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Shadows & Effects */
    --cyan-bloom: 0px 24px 48px rgba(0, 49, 99, 0.08);
    /* Deepened for pure white */
    --glass-border: rgba(0, 49, 99, 0.06);
}

/* RTL Typography Override */
html[dir="rtl"] {
    --font-heading: 'Cairo', sans-serif;
    --font-body: 'Cairo', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--surface);
    color: var(--primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

main {
    flex: 1;
}

/* Glassmorphism Navigation */
.glass-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--surface-glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 4rem;
    max-width: 1440px;
    margin: 0 auto;
}

.nav-brand {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    font-family: var(--font-body);
    color: var(--primary);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--secondary-container);
}

/* Buttons */
.nav-button {
    text-decoration: none;
    background-color: var(--secondary-container);
    color: #001e2e;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.375rem;
    font-weight: 600;
    font-family: var(--font-body);
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--cyan-bloom);
}

.btn-primary {
    background-color: var(--primary-container);
    color: #ffffff;
    border: none;
    padding: 1rem 2rem;
    border-radius: 0.375rem;
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.2s ease;
    white-space: nowrap;
}

.btn-primary:hover {
    background-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--cyan-bloom);
}

/* Hero Section */
.hero-section {
    padding: 12rem 4rem 6rem;
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    gap: 4rem;
}

.hero-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.lead-in {
    font-family: var(--font-body);
    font-size: 0.875rem;
    text-transform: uppercase;
    color: var(--secondary-container);
    letter-spacing: 0.15em;
    font-weight: 600;
    display: block;
    margin-bottom: 1.5rem;
}

html[dir="rtl"] .lead-in {
    letter-spacing: 0;
}

.main-hero-logo {
    width: 86%;
    max-width: 600px;
    height: auto;
    object-fit: contain;
    display: block;
    margin-bottom: 2rem;
}

.display-main {
    font-family: var(--font-heading);
    font-size: 5rem;
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--primary);
}

.hero-offset-content {
    margin-inline-start: 20%;
    max-width: 480px;
}

.body-text {
    font-size: 1.125rem;
    line-height: 1.6;
    color: #424751;
    margin-bottom: 3rem;
}

/* Input Fields */
.input-container {
    display: flex;
    gap: 1rem;
    position: relative;
    max-width: 450px;
}

.architectural-input {
    flex: 1;
    background-color: var(--surface-glass);
    border: 1px solid var(--glass-border);
    border-bottom: 2px solid transparent;
    padding: 1rem 1.5rem;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--primary);
    outline: none;
    backdrop-filter: blur(12px);
    border-radius: 4px 4px 0 0;
    transition: border-color 0.3s ease, background-color 0.3s ease, transform 0.3s ease;
}

.architectural-input::placeholder {
    color: #737782;
}

.architectural-input:focus {
    border-bottom: 2px solid var(--secondary);
    background-color: var(--surface-container-highest);
    transform: translateY(-2px);
    box-shadow: 0px 10px 20px rgba(0, 49, 99, 0.04);
}

/* Hero Visual & Layering */
.hero-visual {
    flex: 1;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 3rem;
    align-items: flex-end;
    /* Flex-end mirrors naturally in RTL */
    padding-top: 2rem;
}

.glass-card {
    background-color: var(--surface-container-low);
    width: 340px;
    padding: 2.5rem 2rem;
    position: relative;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: var(--cyan-bloom);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.glass-card:hover {
    transform: translateY(-8px);
    box-shadow: 0px 32px 64px rgba(0, 49, 99, 0.12);
}

.offset-card {
    margin-inline-end: 4rem;
    /* Logical margin */
    background-color: var(--surface-container-highest);
    z-index: 10;
    transform: translateY(-2rem);
}

.offset-card:hover {
    transform: translateY(-2.5rem);
}

.color-accent-bar {
    height: 4px;
    width: 100%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
    position: absolute;
    top: 0;
    left: 0;
    border-radius: 8px 8px 0 0;
}

.color-accent-bar.alt {
    background: var(--secondary-fixed-dim);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    margin-top: 1rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.contact-icon {
    color: var(--primary);
}

.card-text {
    font-size: 1rem;
    line-height: 1.5;
}

.contact-link {
    color: var(--secondary-container);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.contact-link:hover {
    color: var(--secondary);
}

/* Footer Section */
.site-footer {
    background-color: var(--surface-glass);
    backdrop-filter: blur(12px);
    padding: 2rem 4rem;
    margin-top: 4rem;
    border-top: 1px solid var(--glass-border);
}

.footer-container {
    max-width: 1440px;
    margin: 0 auto;
    text-align: center;
}

.site-footer p {
    color: #737782;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1024px) {

    .nav-container,
    .hero-section,
    .site-footer {
        padding-inline: 2rem;
    }

    .hero-section {
        flex-direction: column;
        padding-top: 8rem;
    }

    .hero-offset-content {
        margin-inline-start: 0;
        max-width: 100%;
    }

    .display-main {
        font-size: 4rem;
    }

    .hero-visual {
        align-items: center;
        padding-top: 2rem;
    }

    .offset-card {
        margin-inline-end: 0;
        margin-inline-start: 0;
        transform: translateY(0);
        margin-top: -1rem;
    }

    .glass-card {
        width: 100%;
        max-width: 400px;
    }
}

@media (max-width: 640px) {
    .display-main {
        font-size: 3rem;
    }

    .input-container {
        flex-direction: column;
    }
}