/* ─── Custom Properties ──────────────────────────────────────────────────── */
:root {
    --bg:           #ffffff;
    --bg-alt:       #f8fafc;
    --text:         #0f172a;
    --text-muted:   #64748b;
    --accent:       #2563eb;
    --accent-dark:  #1d4ed8;
    --accent-light: #dbeafe;
    --border:       #e2e8f0;
    --shadow:       0 1px 3px rgba(15,23,42,.08), 0 1px 2px rgba(15,23,42,.06);
    --shadow-md:    0 4px 6px rgba(15,23,42,.07), 0 2px 4px rgba(15,23,42,.05);
    --shadow-lg:    0 10px 25px rgba(15,23,42,.1), 0 4px 10px rgba(15,23,42,.06);
    --radius:       10px;
    --radius-sm:    6px;
    --max-w:        1200px;
    --nav-h:        70px;
    --transition:   0.25s ease;
}

/* ─── Reset & Base ───────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-h);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg);
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a   { color: inherit; text-decoration: none; }
ul  { list-style: none; }

/* ─── Layout ─────────────────────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section       { padding: 6rem 0; }
.section-alt   { background: var(--bg-alt); }

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 4rem;
}

.section-label {
    display: inline-block;
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-light);
    padding: .25rem .75rem;
    border-radius: 999px;
    margin-bottom: .75rem;
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -.025em;
    line-height: 1.2;
    color: var(--text);
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.0625rem;
    max-width: 540px;
    margin: 0 auto;
}

/* ─── Navigation ─────────────────────────────────────────────────────────── */
.nav-wrapper {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    height: var(--nav-h);
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.nav-wrapper.scrolled {
    border-bottom-color: var(--border);
    box-shadow: var(--shadow);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: .625rem;
    font-weight: 700;
    font-size: .9375rem;
    color: var(--text);
    transition: opacity var(--transition);
}
.nav-logo:hover { opacity: .75; }

.logo-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--accent);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: .875rem;
    font-weight: 700;
    letter-spacing: -.02em;
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-sub {
    display: block;
    font-size: .6875rem;
    font-weight: 400;
    color: var(--text-muted);
    letter-spacing: .02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: .25rem;
}

.nav-link {
    padding: .5rem .875rem;
    border-radius: var(--radius-sm);
    font-size: .9375rem;
    font-weight: 500;
    color: var(--text-muted);
    transition: color var(--transition), background var(--transition);
}
.nav-link:hover     { color: var(--text); background: var(--bg-alt); }
.nav-link.active    { color: var(--accent); }

.nav-link.nav-cta {
    background: var(--accent);
    color: #fff;
    padding: .5rem 1.125rem;
    margin-left: .5rem;
}
.nav-link.nav-cta:hover { background: var(--accent-dark); color: #fff; }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: .5rem;
    border-radius: var(--radius-sm);
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform .25s ease, opacity .25s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Hero ───────────────────────────────────────────────────────────────── */
.hero {
    position: relative;
    min-height: 100svh;
    display: flex;
    align-items: center;
    padding: calc(var(--nav-h) + 3rem) 0 4rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% -10%, rgba(37,99,235,.07) 0%, transparent 70%),
        radial-gradient(ellipse 50% 40% at 80% 60%, rgba(37,99,235,.04) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    max-width: 780px;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-size: .8125rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-light);
    padding: .375rem 1rem;
    border-radius: 999px;
    margin-bottom: 1.75rem;
    letter-spacing: .03em;
}
.hero-badge::before {
    content: '';
    display: inline-block;
    width: 7px;
    height: 7px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: .6; transform: scale(.8); }
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.75rem);
    font-weight: 700;
    letter-spacing: -.04em;
    line-height: 1.1;
    color: var(--text);
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    color: var(--text-muted);
    max-width: 600px;
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 4rem;
}

.hero-scroll {
    display: flex;
}

.scroll-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1.5px solid var(--border);
    border-radius: 50%;
    color: var(--text-muted);
    transition: border-color var(--transition), color var(--transition), transform var(--transition);
    animation: bob 2s ease-in-out infinite;
}
.scroll-indicator:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(2px);
}

@keyframes bob {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(5px); }
}

/* ─── Buttons ────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-size: .9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: 1.5px solid transparent;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}
.btn-primary:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37,99,235,.35);
}

.btn-secondary {
    background: transparent;
    color: var(--text);
    border-color: var(--border);
}
.btn-secondary:hover {
    border-color: var(--text-muted);
    background: var(--bg-alt);
    transform: translateY(-1px);
}

/* ─── Services ───────────────────────────────────────────────────────────── */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent);
}

.service-icon {
    width: 52px;
    height: 52px;
    background: var(--accent-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    color: var(--accent);
}
.service-icon svg { width: 26px; height: 26px; }

.service-title {
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: -.02em;
    margin-bottom: .625rem;
}

.service-text {
    color: var(--text-muted);
    font-size: .9375rem;
    margin-bottom: 1.25rem;
    line-height: 1.65;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .375rem;
}
.service-tags li {
    font-size: .75rem;
    font-weight: 500;
    padding: .2rem .6rem;
    border-radius: 999px;
    background: var(--bg-alt);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

/* ─── Projects ───────────────────────────────────────────────────────────── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.projects-empty {
    text-align: center;
    color: var(--text-muted);
    padding: 4rem 0;
    border: 2px dashed var(--border);
    border-radius: var(--radius);
}

.project-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
    display: flex;
    flex-direction: column;
}
.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.project-img-wrap {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--bg-alt);
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.project-card:hover .project-img { transform: scale(1.04); }

.project-img-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--border);
}
.project-img-placeholder svg { width: 48px; height: 48px; }

.project-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-cat {
    font-size: .75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--accent);
    margin-bottom: .5rem;
    display: block;
}

.project-title {
    font-size: 1.0625rem;
    font-weight: 700;
    letter-spacing: -.02em;
    margin-bottom: .5rem;
    color: var(--text);
}

.project-desc {
    color: var(--text-muted);
    font-size: .9rem;
    margin-bottom: 1rem;
    flex: 1;
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .375rem;
    margin-bottom: 1rem;
}

.tag {
    font-size: .7rem;
    font-weight: 500;
    padding: .2rem .55rem;
    border-radius: 999px;
    background: var(--accent-light);
    color: var(--accent);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: .375rem;
    font-size: .875rem;
    font-weight: 600;
    color: var(--accent);
    transition: gap var(--transition);
    margin-top: auto;
    padding-top: .75rem;
    border-top: 1px solid var(--border);
}
.project-link:hover { gap: .625rem; }

/* ─── About ──────────────────────────────────────────────────────────────── */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text-col { max-width: 520px; }
.about-text-col .section-label { margin-bottom: .5rem; }
.about-text-col .section-title { margin-bottom: 1.25rem; }

.about-text {
    color: var(--text-muted);
    font-size: 1.0rem;
    line-height: 1.75;
    margin-bottom: 2rem;
}

.about-highlights {
    display: flex;
    flex-direction: column;
    gap: .875rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.highlight {
    display: flex;
    align-items: baseline;
    gap: .75rem;
}
.highlight strong {
    font-size: .8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .06em;
    color: var(--text-muted);
    min-width: 80px;
}
.highlight span {
    font-size: .9375rem;
    color: var(--text);
    font-weight: 500;
}

.about-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
}

.about-card-inner { display: flex; flex-direction: column; align-items: center; gap: 2rem; }

.about-avatar {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -.04em;
    flex-shrink: 0;
}

.about-tech-list {
    display: flex;
    flex-direction: column;
    gap: .625rem;
    width: 100%;
}

.tech-item {
    display: flex;
    align-items: center;
    gap: .625rem;
    font-size: .9375rem;
    color: var(--text);
    font-weight: 500;
}

.tech-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    flex-shrink: 0;
}

/* ─── Contact ────────────────────────────────────────────────────────────── */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    padding: 2rem;
    background: var(--bg-alt);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: .875rem;
    color: var(--text);
    font-size: .9375rem;
    font-weight: 500;
}
.contact-item svg { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; }
.contact-item a   { color: var(--accent); word-break: break-all; }
.contact-item a:hover { text-decoration: underline; }

.contact-promise {
    display: flex;
    align-items: center;
    gap: .875rem;
    color: var(--text-muted);
    font-size: .875rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}
.contact-promise svg { width: 18px; height: 18px; color: #10b981; flex-shrink: 0; }

/* ─── Form ───────────────────────────────────────────────────────────────── */
.contact-form {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
}

.form-honeypot { display: none; visibility: hidden; }

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: .375rem;
    margin-bottom: 1.25rem;
}

.form-group label {
    font-size: .875rem;
    font-weight: 600;
    color: var(--text);
}

.req { color: var(--accent); margin-left: .1rem; }

.form-group input,
.form-group textarea {
    width: 100%;
    padding: .75rem 1rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    font-family: inherit;
    font-size: .9375rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.form-group input.error,
.form-group textarea.error {
    border-color: #ef4444;
}

.form-error {
    font-size: .8125rem;
    color: #ef4444;
    min-height: 1em;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    padding: .875rem 1.5rem;
    position: relative;
}

.btn-spinner {
    display: none;
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255,255,255,.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin .7s linear infinite;
}

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

.btn-submit.loading .btn-text { opacity: 0; }
.btn-submit.loading .btn-icon { display: none; }
.btn-submit.loading .btn-spinner { display: block; position: absolute; }

.form-status {
    margin-top: 1rem;
    padding: .875rem 1rem;
    border-radius: var(--radius-sm);
    font-size: .9rem;
    font-weight: 500;
    display: none;
}
.form-status.success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; display: block; }
.form-status.error   { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; display: block; }

/* ─── Footer ─────────────────────────────────────────────────────────────── */
.footer {
    background: var(--text);
    color: rgba(255,255,255,.6);
    padding: 3rem 0 2rem;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: .625rem;
    color: #fff;
    font-weight: 600;
    font-size: .9375rem;
}
.footer-brand .logo-mark { background: rgba(255,255,255,.15); }

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: .25rem 1.25rem;
    justify-content: center;
}
.footer-links a {
    font-size: .875rem;
    transition: color var(--transition);
}
.footer-links a:hover { color: #fff; }

.footer-copy { font-size: .8125rem; }

/* ─── Animations ─────────────────────────────────────────────────────────── */
.fade-in {
    opacity: 0;
    transform: translateY(16px);
    animation: fadeInUp .6s ease forwards;
}
.fade-in:nth-child(1) { animation-delay: .1s; }
.fade-in:nth-child(2) { animation-delay: .2s; }
.fade-in:nth-child(3) { animation-delay: .3s; }
.fade-in:nth-child(4) { animation-delay: .4s; }
.fade-in:nth-child(5) { animation-delay: .5s; }

@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .about-layout        { grid-template-columns: 1fr; gap: 2.5rem; }
    .about-text-col      { max-width: 100%; }
    .about-card-inner    { flex-direction: row; }
    .contact-layout      { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    :root { --nav-h: 60px; }

    .nav-toggle { display: flex; }

    .nav-links {
        position: fixed;
        top: var(--nav-h);
        left: 0; right: 0;
        background: var(--bg);
        flex-direction: column;
        gap: 0;
        padding: 1rem 0;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        transform: translateY(-110%);
        opacity: 0;
        transition: transform .3s ease, opacity .3s ease;
        pointer-events: none;
    }
    .nav-links.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    .nav-link        { padding: .75rem 1.5rem; border-radius: 0; width: 100%; }
    .nav-link.nav-cta { margin: .5rem 1rem 0; width: calc(100% - 2rem); border-radius: var(--radius-sm); text-align: center; justify-content: center; }

    .section         { padding: 4rem 0; }
    .form-row        { grid-template-columns: 1fr; }
    .contact-form    { padding: 1.5rem; }
    .services-grid   { grid-template-columns: 1fr; }
    .projects-grid   { grid-template-columns: 1fr; }
    .about-card-inner { flex-direction: column; }
    .hero-actions    { flex-direction: column; }
    .hero-actions .btn { width: 100%; justify-content: center; }
}

@media (max-width: 480px) {
    .contact-info    { padding: 1.25rem; }
    .service-card    { padding: 1.5rem; }
    .about-card      { padding: 1.5rem; }
}