/* CSS Cascade Layers */
@layer reset, tokens, base, layout, components, utilities;

@layer reset {
    /* Modern Reset */
    *, *::before, *::after {
        box-sizing: border-box;
        margin: 0;
        padding: 0;
    }

    html {
        scroll-behavior: smooth;
        -webkit-text-size-adjust: 100%;
    }

    body {
        min-height: 100vh;
        text-rendering: optimizeSpeed;
        line-height: 1.6;
        overflow-x: hidden;
    }

    img, picture, svg {
        max-width: 100%;
        display: block;
    }

    input, button, textarea, select {
        font: inherit;
    }

    a {
        text-decoration: none;
        color: inherit;
    }

    ul, ol {
        list-style: none;
    }
}

@layer tokens {
    :root {
        /* Color Palette */
        /* Primary Blue: #244994 -> hsl(221, 61%, 37%) */
        --color-primary-hue: 221;
        --color-primary-saturation: 61%;
        --color-primary-lightness: 37%;
        --color-primary: hsl(var(--color-primary-hue), var(--color-primary-saturation), var(--color-primary-lightness));
        --color-primary-subtle: hsl(var(--color-primary-hue), var(--color-primary-saturation), 96%);
        
        /* Secondary Red: #c73326 -> hsl(5, 77%, 46%) */
        --color-secondary-hue: 5;
        --color-secondary-saturation: 77%;
        --color-secondary-lightness: 46%;
        --color-secondary: hsl(var(--color-secondary-hue), var(--color-secondary-saturation), var(--color-secondary-lightness));
        --color-secondary-subtle: hsl(var(--color-secondary-hue), var(--color-secondary-saturation), 96%);

        /* Neutrals */
        --color-white: #ffffff;
        --color-neutral-50: #f8fafc;
        --color-neutral-100: #f1f5f9;
        --color-neutral-200: #e2e8f0;
        --color-neutral-300: #cbd5e1;
        --color-neutral-600: #475569;
        --color-neutral-800: #1e293b;
        --color-neutral-900: #0f172a;

        /* Semantic Colors */
        --color-bg: var(--color-white);
        --color-bg-subtle: var(--color-neutral-50);
        --color-text: var(--color-neutral-800);
        --color-text-muted: var(--color-neutral-600);
        --color-border: var(--color-neutral-200);

        /* Typography */
        --font-sans: 'Inter', system-ui, sans-serif;
        --font-display: 'Outfit', system-ui, sans-serif;

        /* Fluid Font Sizes using clamp() */
        --fs-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
        --fs-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
        --fs-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
        --fs-lg: clamp(1.125rem, 1.05rem + 0.4vw, 1.25rem);
        --fs-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
        --fs-2xl: clamp(1.5rem, 1.3rem + 1vw, 2.25rem);
        --fs-3xl: clamp(2rem, 1.75rem + 1.5vw, 3.25rem);
        --fs-4xl: clamp(2.5rem, 2rem + 2vw, 4.5rem);

        /* Spacing */
        --space-xs: 0.5rem;
        --space-sm: 1rem;
        --space-md: 1.5rem;
        --space-lg: 2rem;
        --space-xl: 3rem;
        --space-2xl: 4rem;
        --space-3xl: 6rem;

        /* Transitions */
        --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);

        /* Shadows */
        --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.05), 0 1px 2px -1px rgb(0 0 0 / 0.05);
        --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
        --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.04), 0 4px 6px -4px rgb(0 0 0 / 0.04);
        --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.03), 0 8px 10px -6px rgb(0 0 0 / 0.03);
        --shadow-premium: 0 30px 60px -15px rgba(36, 73, 148, 0.08), 0 15px 30px -10px rgba(199, 51, 38, 0.04);

        /* Border Radius */
        --radius-sm: 8px;
        --radius-md: 16px;
        --radius-lg: 24px;
        --radius-full: 9999px;
    }
}

@layer base {
    html {
        color-scheme: light;
        background-color: var(--color-bg);
    }

    body {
        font-family: var(--font-sans);
        color: var(--color-text);
        font-size: var(--fs-base);
        background-color: var(--color-bg);
    }

    h1, h2, h3, h4 {
        font-family: var(--font-display);
        color: var(--color-neutral-900);
        font-weight: 700;
        line-height: 1.15;
    }

    h1 { font-size: var(--fs-4xl); }
    h2 { font-size: var(--fs-3xl); }
    h3 { font-size: var(--fs-2xl); }
    h4 { font-size: var(--fs-xl); }

    p {
        color: var(--color-text-muted);
        line-height: 1.6;
    }

    /* Selection Highlight Styling */
    ::selection {
        background-color: hsla(var(--color-primary-hue), var(--color-primary-saturation), var(--color-primary-lightness), 0.1);
        color: var(--color-primary);
    }

    /* Accessibility Focus Styling */
    :focus-visible {
        outline: 3px solid var(--color-primary);
        outline-offset: 4px;
    }
}

@layer layout {
    .container {
        width: 100%;
        max-width: 1280px;
        margin-inline: auto;
        padding-inline: var(--space-md);
    }

    @media (min-width: 640px) {
        .container {
            padding-inline: var(--space-lg);
        }
    }

    /* Background Ambient Glows */
    .bg-glow {
        position: absolute;
        width: min(80vw, 600px);
        aspect-ratio: 1;
        border-radius: var(--radius-full);
        filter: blur(120px);
        opacity: 0.08;
        pointer-events: none;
        z-index: -1;
    }

    .bg-glow-blue {
        top: -100px;
        left: -100px;
        background: radial-gradient(circle, var(--color-primary) 0%, transparent 70%);
    }

    .bg-glow-red {
        top: 40vh;
        right: -200px;
        background: radial-gradient(circle, var(--color-secondary) 0%, transparent 70%);
    }

    /* Site Header */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 100;
        border-bottom: 1px solid rgba(226, 232, 240, 0.4);
        background-color: rgba(255, 255, 255, 0.8);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        transition: background-color var(--transition-fast), border-color var(--transition-fast);
    }

    .site-header.scrolled {
        background-color: rgba(255, 255, 255, 0.95);
        border-bottom-color: var(--color-neutral-200);
        box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.02);
    }

    .header-container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 80px;
        transition: height var(--transition-fast);
    }

    .site-header.scrolled .header-container {
        height: 68px;
    }

    .logo-link {
        display: flex;
        align-items: center;
        gap: var(--space-xs);
        font-family: var(--font-display);
        font-weight: 800;
        font-size: var(--fs-xl);
        color: var(--color-neutral-900);
    }

    .nav-logo {
        height: 38px;
        width: auto;
        object-fit: contain;
    }

    .logo-dot {
        color: var(--color-primary);
    }

    .logo-ai {
        color: var(--color-secondary);
    }

    .main-nav {
        display: none;
    }

    .nav-list {
        display: flex;
        gap: var(--space-lg);
    }

    .nav-link {
        font-weight: 500;
        color: var(--color-text-muted);
        transition: color var(--transition-fast);
        position: relative;
        padding-block: var(--space-xs);
    }

    .nav-link::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 2px;
        background-color: var(--color-primary);
        transform: scaleX(0);
        transform-origin: right;
        transition: transform var(--transition-fast);
    }

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

    .nav-link:hover::after,
    .nav-link.active::after {
        transform: scaleX(1);
        transform-origin: left;
    }

    .nav-link.active {
        color: var(--color-primary);
    }

    .header-cta {
        display: none;
    }

    /* Mobile Menu Toggle */
    .mobile-nav-toggle {
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 24px;
        height: 18px;
        background: transparent;
        border: none;
        cursor: pointer;
        z-index: 150;
    }

    .hamburger-line {
        width: 100%;
        height: 2px;
        background-color: var(--color-neutral-900);
        transition: transform var(--transition-normal), opacity var(--transition-normal);
        transform-origin: left center;
    }

    .mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(0, -1px);
    }

    .mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
        opacity: 0;
    }

    .mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(0, 1px);
    }

    /* Desktop Navigation overrides */
    @media (min-width: 768px) {
        .main-nav {
            display: block;
        }

        .header-cta {
            display: block;
        }

        .mobile-nav-toggle {
            display: none;
        }
    }

    /* Mobile Nav Active */
    @media (max-width: 767px) {
        .main-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background-color: var(--color-white);
            z-index: 90;
            display: flex;
            align-items: center;
            justify-content: center;
            transform: translateX(100%);
            transition: transform var(--transition-normal);
        }

        .main-nav.active {
            transform: translateX(0);
        }

        .nav-list {
            flex-direction: column;
            align-items: center;
            gap: var(--space-xl);
        }

        .nav-link {
            font-size: var(--fs-xl);
        }
    }

    /* Hero Section Layout */
    .hero-section {
        padding-top: calc(80px + var(--space-2xl));
        padding-bottom: var(--space-3xl);
        min-height: min(100vh, 800px);
        display: flex;
        align-items: center;
    }

    .hero-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        align-items: center;
        width: 100%;
    }

    @media (min-width: 992px) {
        .hero-grid {
            grid-template-columns: 1.1fr 0.9fr;
            gap: var(--space-3xl);
        }
    }

    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
    }

    .hero-tagline {
        font-family: var(--font-sans);
        font-weight: 600;
        font-size: var(--fs-sm);
        text-transform: uppercase;
        letter-spacing: 0.1em;
        color: var(--color-primary);
        margin-bottom: var(--space-sm);
        display: inline-block;
    }

    .hero-title {
        margin-bottom: var(--space-md);
        letter-spacing: -0.02em;
    }

    .hero-lead {
        font-size: var(--fs-lg);
        margin-bottom: var(--space-xl);
        max-width: 580px;
    }

    .hero-actions {
        display: flex;
        flex-wrap: wrap;
        gap: var(--space-sm);
        width: 100%;
    }

    @media (min-width: 480px) {
        .hero-actions {
            width: auto;
        }
    }

    /* Hero Visual Card */
    .hero-visual-wrapper {
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .hero-card {
        width: 100%;
        max-width: 420px;
        aspect-ratio: 1;
        position: relative;
        perspective: 1000px;
    }

    .hero-card-inner {
        width: 100%;
        height: 100%;
        background-color: var(--color-white);
        border: 1px solid var(--color-neutral-200);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-premium);
        display: flex;
        align-items: center;
        justify-content: center;
        padding: var(--space-xl);
        transition: transform var(--transition-normal), box-shadow var(--transition-normal);
        position: relative;
        overflow: hidden;
    }

    .hero-card:hover .hero-card-inner {
        transform: translateY(-8px) rotateX(4deg) rotateY(-4deg);
        box-shadow: 0 40px 80px -20px rgba(36, 73, 148, 0.12), 0 20px 40px -15px rgba(199, 51, 38, 0.06);
    }

    .hero-logo-img {
        width: 90%;
        height: 90%;
        object-fit: contain;
        transition: transform var(--transition-slow);
    }

    .hero-card:hover .hero-logo-img {
        transform: scale(1.04);
    }

    .hero-card-glow {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle at 100% 100%, rgba(199, 51, 38, 0.08) 0%, transparent 50%),
                    radial-gradient(circle at 0% 0%, rgba(36, 73, 148, 0.08) 0%, transparent 50%);
        pointer-events: none;
    }

    /* Projects Section Layout */
    .projects-section {
        background-color: var(--color-bg-subtle);
        padding-block: var(--space-3xl);
        border-block: 1px solid var(--color-neutral-100);
    }

    .section-header {
        text-align: center;
        margin-bottom: var(--space-3xl);
        max-width: 650px;
        margin-inline: auto;
    }

    .section-title {
        margin-bottom: var(--space-xs);
        letter-spacing: -0.01em;
    }

    .section-subtitle {
        font-size: var(--fs-lg);
        color: var(--color-text-muted);
    }

    .projects-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    @media (min-width: 768px) {
        .projects-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    /* About Section Layout */
    .about-section {
        padding-block: var(--space-3xl);
    }

    .about-grid {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        align-items: center;
    }

    @media (min-width: 992px) {
        .about-grid {
            grid-template-columns: 0.9fr 1.1fr;
            gap: var(--space-3xl);
        }
    }

    .about-visual-wrapper {
        display: flex;
        justify-content: center;
    }

    .about-card {
        width: 100%;
        max-width: 440px;
        aspect-ratio: 1.1;
        background-color: var(--color-white);
        border: 1px solid var(--color-neutral-100);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-xl);
        display: flex;
        align-items: center;
        justify-content: center;
        padding: var(--space-lg);
        position: relative;
    }

    .about-logo-img {
        width: 95%;
        height: 95%;
        object-fit: contain;
    }

    .about-card-glow {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle at 10% 100%, rgba(36, 73, 148, 0.05) 0%, transparent 60%);
        pointer-events: none;
        border-radius: var(--radius-lg);
    }

    .about-content {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
    }

    .about-content .section-title {
        margin-bottom: var(--space-md);
    }

    .about-content p {
        margin-bottom: var(--space-xl);
        font-size: var(--fs-lg);
    }

    /* Contact Section Layout */
    .contact-section {
        padding-block: var(--space-3xl);
        background-color: var(--color-bg);
    }

    .contact-card {
        background-color: var(--color-bg-subtle);
        border: 1px solid var(--color-neutral-200);
        border-radius: var(--radius-lg);
        padding: var(--space-xl) var(--space-md);
        max-width: 900px;
        margin-inline: auto;
        box-shadow: var(--shadow-lg);
        position: relative;
        overflow: hidden;
    }

    @media (min-width: 640px) {
        .contact-card {
            padding: var(--space-2xl) var(--space-xl);
        }
    }

    .contact-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 4px;
        background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
    }

    .contact-card-content {
        max-width: 680px;
        margin-inline: auto;
        text-align: center;
    }

    .contact-title {
        font-size: var(--fs-2xl);
        margin-bottom: var(--space-sm);
    }

    .contact-lead {
        font-size: var(--fs-base);
        margin-bottom: var(--space-xl);
    }

    /* Site Footer Layout */
    .site-footer {
        background-color: var(--color-neutral-900);
        color: var(--color-neutral-300);
        padding-top: var(--space-3xl);
        padding-bottom: var(--space-xl);
        border-top: 1px solid var(--color-neutral-800);
    }

    .footer-container {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        margin-bottom: var(--space-2xl);
    }

    @media (min-width: 768px) {
        .footer-container {
            grid-template-columns: 1fr 1.5fr;
        }
    }

    .footer-brand {
        display: flex;
        flex-direction: column;
        gap: var(--space-sm);
    }

    .footer-logo {
        font-family: var(--font-display);
        font-weight: 800;
        font-size: var(--fs-xl);
        color: var(--color-white);
    }

    .footer-tagline {
        color: var(--color-neutral-300);
        font-size: var(--fs-sm);
        max-width: 280px;
    }

    .footer-links {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-xl);
    }

    @media (min-width: 480px) {
        .footer-links {
            grid-template-columns: repeat(3, 1fr);
        }
    }

    .footer-col-title {
        color: var(--color-white);
        font-size: var(--fs-sm);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        margin-bottom: var(--space-md);
    }

    .footer-list {
        display: flex;
        flex-direction: column;
        gap: var(--space-xs);
    }

    .footer-list a {
        font-size: var(--fs-sm);
        color: var(--color-neutral-300);
        transition: color var(--transition-fast);
    }

    .footer-list a:hover {
        color: var(--color-white);
    }

    .footer-email {
        word-break: break-all;
    }

    .footer-bottom {
        border-top: 1px solid var(--color-neutral-800);
        padding-top: var(--space-md);
        display: flex;
        flex-direction: column;
        gap: var(--space-sm);
        align-items: center;
        text-align: center;
    }

    @media (min-width: 640px) {
        .footer-bottom {
            flex-direction: row;
            justify-content: space-between;
            text-align: left;
        }
    }

    .copyright, .credits {
        font-size: var(--fs-xs);
        color: var(--color-neutral-600);
    }
}

@layer components {
    /* Buttons */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 0.85em 1.75em;
        font-weight: 500;
        border-radius: var(--radius-sm);
        transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
        cursor: pointer;
        border: 2px solid transparent;
        font-size: var(--fs-sm);
        text-align: center;
    }

    .btn-primary {
        background-color: var(--color-primary);
        color: var(--color-white);
        box-shadow: 0 4px 14px 0 rgba(36, 73, 148, 0.15);
    }

    .btn-primary:hover {
        background-color: hsl(var(--color-primary-hue), var(--color-primary-saturation), calc(var(--color-primary-lightness) - 5%));
        transform: translateY(-2px);
        box-shadow: 0 6px 20px 0 rgba(36, 73, 148, 0.25);
    }

    .btn-primary:active {
        transform: translateY(0);
    }

    .btn-secondary {
        background-color: var(--color-bg);
        color: var(--color-text);
        border-color: var(--color-neutral-200);
    }

    .btn-secondary:hover {
        background-color: var(--color-bg-subtle);
        border-color: var(--color-neutral-300);
        transform: translateY(-2px);
    }

    .btn-secondary:active {
        transform: translateY(0);
    }

    .btn-outline {
        background-color: transparent;
        color: var(--color-primary);
        border-color: var(--color-primary);
    }

    .btn-outline:hover {
        background-color: var(--color-primary-subtle);
        transform: translateY(-2px);
    }

    .btn-outline:active {
        transform: translateY(0);
    }

    /* Cards */
    .project-card {
        background-color: var(--color-white);
        border: 1px solid var(--color-neutral-200);
        border-radius: var(--radius-md);
        overflow: hidden;
        display: flex;
        flex-direction: column;
        position: relative;
        box-shadow: var(--shadow-sm);
        transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
    }

    .project-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
        border-color: var(--color-neutral-300);
    }

    .card-accent-line {
        height: 4px;
        width: 100%;
    }

    .card-accent-blue {
        background-color: var(--color-primary);
    }

    .card-accent-red {
        background-color: var(--color-secondary);
    }

    .card-content {
        padding: var(--space-xl) var(--space-lg);
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        flex-grow: 1;
    }

    .project-icon-box {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 48px;
        aspect-ratio: 1;
        border-radius: var(--radius-sm);
        margin-bottom: var(--space-md);
    }

    .icon-blue {
        background-color: var(--color-primary-subtle);
        color: var(--color-primary);
    }

    .icon-red {
        background-color: var(--color-secondary-subtle);
        color: var(--color-secondary);
    }

    .project-icon {
        width: 24px;
        height: 24px;
    }

    .project-title {
        font-size: var(--fs-xl);
        margin-bottom: var(--space-sm);
    }

    .project-description {
        margin-bottom: var(--space-lg);
        flex-grow: 1;
    }

    /* Badges */
    .badge {
        display: inline-block;
        padding: 0.25em 0.75em;
        font-size: var(--fs-xs);
        font-weight: 600;
        border-radius: var(--radius-full);
        margin-bottom: var(--space-sm);
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }

    .badge-soon {
        background-color: var(--color-neutral-100);
        color: var(--color-neutral-600);
        border: 1px solid var(--color-neutral-200);
    }

    .project-card:hover .badge-soon {
        background-color: var(--color-white);
        border-color: var(--color-neutral-300);
    }

    /* Interactive text links */
    .btn-text {
        font-weight: 600;
        font-size: var(--fs-sm);
        color: var(--color-primary);
        display: inline-flex;
        align-items: center;
        gap: var(--space-xs);
        transition: color var(--transition-fast);
    }

    .btn-text .arrow {
        transition: transform var(--transition-fast);
    }

    .btn-text:hover {
        color: var(--color-secondary);
    }

    .btn-text:hover .arrow {
        transform: translateX(4px);
    }

    /* Value items in about us */
    .values-list {
        display: flex;
        flex-direction: column;
        gap: var(--space-lg);
        width: 100%;
    }

    .values-list li {
        display: flex;
        gap: var(--space-md);
        align-items: flex-start;
    }

    .value-bullet {
        width: 12px;
        height: 12px;
        border-radius: var(--radius-full);
        margin-top: 6px;
        flex-shrink: 0;
    }

    .bullet-blue { background-color: var(--color-primary); }
    .bullet-red { background-color: var(--color-secondary); }

    .value-desc {
        font-size: var(--fs-base);
        margin-top: 2px;
    }

    /* Contact Form Styles */
    .contact-form {
        width: 100%;
        display: flex;
        flex-direction: column;
        gap: var(--space-md);
        margin-top: var(--space-lg);
    }

    .form-group-row {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    @media (min-width: 640px) {
        .form-group-row {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    .form-group, .form-group-textarea {
        display: flex;
        flex-direction: column;
    }

    .contact-form input,
    .contact-form textarea {
        width: 100%;
        padding: 0.9em 1.2em;
        background-color: var(--color-white);
        border: 1px solid var(--color-neutral-300);
        border-radius: var(--radius-sm);
        font-size: var(--fs-sm);
        transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        color: var(--color-neutral-900);
    }

    .contact-form input::placeholder,
    .contact-form textarea::placeholder {
        color: var(--color-neutral-600);
        opacity: 0.7;
    }

    .contact-form input:focus,
    .contact-form textarea:focus {
        outline: none;
        border-color: var(--color-primary);
        box-shadow: 0 0 0 3px hsla(var(--color-primary-hue), var(--color-primary-saturation), var(--color-primary-lightness), 0.1);
    }

    .contact-form textarea {
        resize: vertical;
        min-block-size: 100px;
    }

    .btn-submit {
        width: 100%;
        margin-top: var(--space-sm);
    }

    @media (min-width: 480px) {
        .btn-submit {
            align-self: center;
            width: auto;
            min-width: 220px;
        }
    }

    .form-feedback {
        margin-top: var(--space-md);
        font-size: var(--fs-sm);
        font-weight: 500;
        opacity: 0;
        transition: opacity var(--transition-fast);
    }

    .form-feedback.success {
        color: #15803d; /* Green alert color */
        opacity: 1;
    }

    .form-feedback.error {
        color: var(--color-secondary);
        opacity: 1;
    }
}

@layer utilities {
    /* Screen Reader Only utility */
    .sr-only {
        position: absolute;
        width: 1px;
        height: 1px;
        padding: 0;
        margin: -1px;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        white-space: nowrap;
        border: 0;
    }

    /* Text wrapping enhancements */
    .font-pretty {
        text-wrap: pretty;
    }

    /* Reveal animations setup */
    .reveal-on-scroll {
        opacity: 0;
        transform: translateY(30px);
        transition: opacity var(--transition-slow), transform var(--transition-slow);
    }

    .reveal-on-scroll.revealed {
        opacity: 1;
        transform: translateY(0);
    }

    .delay-100 { transition-delay: 100ms; }
    .delay-200 { transition-delay: 200ms; }
    .delay-300 { transition-delay: 300ms; }

    /* Accessibility reduced motion */
    @media (prefers-reduced-motion: reduce) {
        .reveal-on-scroll {
            opacity: 1 !important;
            transform: none !important;
            transition: none !important;
        }
        
        .btn, .project-card, .hero-card-inner, .btn-text .arrow, .hero-logo-img {
            transition: none !important;
            transform: none !important;
            box-shadow: none !important;
        }
        
        html {
            scroll-behavior: auto !important;
        }
    }
}