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

:root {
    --bg:       #282b34;
    --bg2:      #23262e;
    --bg3:      #2f333b;
    --surface:  #2f333b;
    --border:   #3a3f4a;
    --accent:   #4195DB;
    --accent2:  #66B1EF;
    --accent-dark: #0C74D1;
    --text:     #eee;
    --light-text: #c1c6cd;
    --muted:    #919499;
    --white:    #ffffff;

    --font-display: 'Source Sans 3', sans-serif;
    --font-body:    'Source Sans 3', sans-serif;
    --radius:   8px;
    --max-w:    1100px;
}

/* Fluid base font: 16px at 1280px → 22px at 2560px */
html {
    font-size: clamp(16px, 0.85vw, 22px);
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

/* ─── NAV ─────────────────────────────── */
nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 2rem;
    height: 64px;
    background: #1F3247;
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(65,149,219,0.3);
}
.nav-logo {
    font-family: var(--font-display);
    font-weight: 900;
    font-size: 1.1rem;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--white);
    text-decoration: none;
}
.nav-logo span { color: var(--accent2); }
.nav-links {
    display: flex; gap: 2rem; list-style: none;
}
.nav-links a {
    font-size: .85rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--white);
    transition: color .2s;
}
.nav-links a:hover { color: var(--accent2); }
.nav-cta {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.4);
    color: var(--white) !important;
    padding: .45rem 1.1rem;
    border-radius: var(--radius);
    font-size: .82rem !important;
    font-weight: 700 !important;
    letter-spacing: .06em;
    transition: background .2s !important;
}
.nav-cta:hover { background: rgba(255,255,255,0.25) !important; transform: none; }

/* ─── HERO ────────────────────────────── */
.hero {
    min-height: 100vh;
    display: flex; flex-direction: column; justify-content: center;
    padding: 8rem 2rem 5rem;
    position: relative;
    overflow: hidden;
    background: #1F3247;
}
.hero::before {
    content: '';
    position: absolute; inset: 0;
    background:
    radial-gradient(circle 1500px at 30% 45%, rgba(102,177,239,.42) 0%, rgba(102,177,239,.18) 40%, transparent 75%),
    radial-gradient(circle 380px at 30% 45%, rgba(55,113,171,.28) 0%, transparent 65%);
    /*radial-gradient(ellipse 60% 50% at 85% 80%, rgba(65,149,219,.18) 0%, transparent 65%);*/
    pointer-events: none;
}
.hero-grid-bg {
    position: absolute; inset: 0; pointer-events: none;
    background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 60px 60px;
    opacity: .18;
    mask-image: radial-gradient(ellipse 90% 80% at 60% 50%, black 40%, transparent 100%);
}
.hero-inner {
    position: relative;
    max-width: var(--max-w);
    margin: 0 auto;
    width: 100%;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: .5rem;
    background: rgba(65,149,219,.15);
    border: 1px solid rgba(65,149,219,.35);
    color: var(--accent2);
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    padding: .35rem .9rem;
    border-radius: 100px;
    margin-bottom: 1.8rem;
}
.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 5.5vw, 4.2rem);
    font-weight: 900;
    line-height: 1.1;
    color: var(--white);
    max-width: 900px;
    margin-bottom: 1.5rem;
    text-shadow:
        0 0 12px rgba(255,255,255,.18),
        0 0 28px rgba(102,177,239,.55),
        0 0 60px rgba(65,149,219,.3);
}
.hero h1 em {
    font-style: normal;
    color: var(--accent2);
    text-shadow: 0 0 8px rgba(102,177,239,.18);
    cursor: default;
    transition: text-shadow .35s ease, color .35s ease;
}
.hero h1 em:hover {
    animation: neonTurnOn 1.2s ease-out forwards, neonPulse 3.2s ease-in-out 1.2s infinite;
}
@keyframes neonTurnOn {
    0% {
        text-shadow: 0 0 8px rgba(102,177,239,.18);
    }
    40% {
        text-shadow:
            0 0 4px rgba(102,177,239,.5),
            0 0 12px rgba(102,177,239,.3);
    }
    55% {
        text-shadow: 0 0 6px rgba(102,177,239,.25);
    }
    70% {
        text-shadow:
            0 0 8px rgba(102,177,239,.95),
            0 0 22px rgba(102,177,239,.7),
            0 0 40px rgba(65,149,219,.55);
    }
    100% {
        text-shadow:
            0 0 6px rgba(102,177,239,.9),
            0 0 18px rgba(102,177,239,.6),
            0 0 36px rgba(65,149,219,.5);
    }
}
@keyframes neonPulse {
    0%, 100% {
        text-shadow:
            0 0 6px rgba(102,177,239,.9),
            0 0 18px rgba(102,177,239,.6),
            0 0 36px rgba(65,149,219,.5);
    }
    50% {
        text-shadow:
            0 0 10px rgba(102,177,239,1),
            0 0 28px rgba(102,177,239,.85),
            0 0 56px rgba(65,149,219,.75),
            0 0 80px rgba(65,149,219,.4);
    }
}
@media (prefers-reduced-motion: reduce) {
    .hero h1 em { animation: none; }
}
.hero-sub {
    font-size: 1.08rem;
    color: var(--light-text);
    max-width: 640px;
    line-height: 1.7;
    margin-bottom: 2.5rem;
    font-weight: 300;
}
.hero-sub strong { color: var(--text); font-weight: 500; }
.hero-ctas {
    display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap;
}
.btn-primary {
    background: var(--accent);
    color: var(--white);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: .9rem;
    padding: .75rem 1.6rem;
    border-radius: var(--radius);
    border: 1px solid var(--accent2);
    cursor: pointer;
    transition: background .2s, transform .15s, box-shadow .25s;
    letter-spacing: .02em;
    box-shadow:
        0 0 0 1px rgba(102,177,239,.3),
        0 0 18px rgba(65,149,219,.45),
        0 0 38px rgba(65,149,219,.25);
}
.btn-primary:hover {
    background: var(--accent2);
    transform: translateY(-2px);
    box-shadow:
        0 0 0 1px rgba(102,177,239,.6),
        0 0 22px rgba(102,177,239,.7),
        0 0 50px rgba(65,149,219,.45);
}
.hero-secondary-link {
    display: inline-flex; align-items: center; gap: .5rem;
    font-size: .88rem;
    font-weight: 500;
    color: var(--light-text);
    background: transparent;
    border: 1px solid var(--border);
    padding: .7rem 1.3rem;
    border-radius: var(--radius);
    transition: color .2s, border-color .2s, background .2s, transform .15s;
}
.hero-secondary-link:hover {
    color: var(--white);
    border-color: var(--accent);
    background: rgba(65,149,219,.08);
}

/* ─── TRUST BAR ───────────────────────── */
.trust-bar {
    background: var(--bg2);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 1.4rem 2rem;
}
.trust-bar-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    display: flex; align-items: center; gap: 2.5rem; flex-wrap: wrap;
}
.trust-label {
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--muted);
    white-space: nowrap;
}
.trust-logos {
    display: flex; align-items: center; gap: 2.5rem; flex-wrap: wrap;
}
.trust-logos span {
    font-family: var(--font-display);
    font-size: .82rem;
    font-weight: 700;
    letter-spacing: .06em;
    color: var(--surface);
    filter: grayscale(1);
    opacity: .55;
    transition: opacity .2s;
    text-transform: uppercase;
    color: var(--muted);
}
.trust-logos span:hover { opacity: .85; }

/* ─── SECTION SHARED ──────────────────── */
section { padding: 6rem 2rem; }
.section-inner { max-width: var(--max-w); margin: 0 auto; }
.section-label {
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: .8rem;
}
.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 1.2rem;
}
.section-intro {
    color: var(--light-text);
    font-size: 1rem;
    max-width: 40em;
    font-weight: 300;
    line-height: 1.7;
    margin-bottom: 3.5rem;
}
.divider {
    width: 40px; height: 3px;
    background: var(--accent);
    border-radius: 2px;
    margin-bottom: 1.5rem;
}

/* ─── SERVICES ────────────────────────── */
#services { background: var(--bg2); }
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5px;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}
.service-card {
    background: var(--bg2);
    padding: 2.2rem;
    transition: background .25s;
    position: relative;
    overflow: hidden;
}
.service-card:hover { background: var(--bg3); }
.service-icon {
    position: absolute;
    bottom: 0.3rem;
    right: 0.3rem;
    font-size: 7rem;
    line-height: 1;
    opacity: .10;
    filter: grayscale(1) contrast(0.5);
    pointer-events: none;
    user-select: none;
}
#small-service-icon{
    position:absolute;
    bottom: 0.4rem;
    right: 0.9rem;
    font-size: 6rem;
}
.service-card h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: .7rem;
    position: relative;
}
.service-card p {
    font-size: .9rem;
    color: var(--light-text);
    line-height: 1.65;
    font-weight: 400;
    position: relative;
}
.service-tags {
    display: flex; flex-wrap: wrap; gap: .4rem;
    margin-top: 1.2rem;
    position: relative;
}
.tag {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    background: rgba(65,149,219,.12);
    color: var(--accent2);
    border: 1px solid rgba(65,149,219,.25);
    padding: .2rem .55rem;
    border-radius: 4px;
}

/* ─── ABOUT ───────────────────────────── */
/*#about { background: var(--bg2); }*/
#about {
    background: #1F3247;
    position: relative;
    overflow: hidden;
}
#about::before {
    content: '';
    position: absolute; inset: 0;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='3' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0  0 0 0 0 0  0 0 0 0 0  0 0 0 0.6 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
    opacity: .2;
    mix-blend-mode: overlay;
    pointer-events: none;
    z-index: 0;
}
#about .section-inner { position: relative; z-index: 1; }
#about .section-label { color: rgba(255,255,255,.85); }
#about .section-title { color: var(--white); }
#about .divider { background: var(--white); }

.about-inner {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 5rem;
    align-items: start;
}
.about-photo {
    width: 100%;
    aspect-ratio: 3/4;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.25);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    display: flex; align-items: center; justify-content: center;
}
.about-photo-placeholder {
    text-align: center;
    color: var(--muted);
    font-size: .8rem;
    padding: 1.5rem;
}
.about-photo-placeholder span {
    font-size: 3rem;
    display: block;
    margin-bottom: .7rem;
    opacity: .3;
}
.about-aside {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.about-links {
    display: flex;
    flex-direction: row;
    justify-content: center;
    gap: .5rem;
}
.about-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    font-size: .82rem;
    font-weight: 600;
    letter-spacing: .03em;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    padding: .6rem .9rem;
    border-radius: var(--radius);
    transition: background .2s, border-color .2s, color .2s, transform .15s;
}
.about-link-icon {
    padding: .6rem;
    width: 2.4rem;
    aspect-ratio: 1;
}
.about-link:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--white);
    transform: translateY(-1px);
}
.about-link i {
    font-size: 1rem;
    color: var(--accent);
    transition: color .2s;
}
.about-link-icon i { font-size: 1.15rem; }
.about-link:hover i { color: var(--white); }
.about-content { }
.about-content .section-title { margin-bottom: .8rem; }
.about-content p {
    color: var(--light-text);
    font-size: .95rem;
    font-weight: 300;
    line-height: 1.8;
    margin-bottom: 1.2rem;
}
.about-content p strong { color: var(--text); font-weight: 500; }
#about .about-content p { color: rgba(255,255,255,.88); }
#about .about-content p strong { color: var(--white); font-weight: 600; }
#about .about-link {
    background: rgba(255,255,255,.1);
    border-color: rgba(255,255,255,.3);
    color: var(--white);
}
#about .about-link:hover {
    background: var(--white);
    border-color: var(--white);
    color: var(--accent-dark);
}
#about .about-link i { color: var(--white); }
#about .about-link:hover i { color: var(--accent-dark); }
#about .credential {
    background: rgba(255,255,255,.1);
    border-color: rgba(255,255,255,.3);
    color: rgba(255,255,255,.9);
}
#about a.credential:hover {
    color: var(--accent-dark);
    background: var(--white);
    border-color: var(--white);
}
.credentials {
    display: flex; flex-wrap: wrap; gap: .6rem;
    margin-top: 2rem;
}
.credential {
    display: flex; align-items: center; gap: .5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    padding: .5rem .9rem;
    border-radius: var(--radius);
    font-size: .8rem;
    color: var(--muted);
    transition: color .2s, border-color .2s, background .2s;
}
a.credential:hover {
    color: var(--text);
    border-color: var(--accent);
    background: var(--bg3);
}
.credential-icon { font-size: .9rem; }

/* ─── FEATURED PROJECTS ───────────────── */
#case-studies { background: var(--bg2); }
.projects-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.2rem;
    align-items: stretch;
    transition: grid-template-columns .4s ease;
}
.projects-grid[data-open-index="0"] { grid-template-columns: 2.2fr .9fr .9fr; }
.projects-grid[data-open-index="1"] { grid-template-columns: .9fr 2.2fr .9fr; }
.projects-grid[data-open-index="2"] { grid-template-columns: .9fr .9fr 2.2fr; }

.project-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    transition: border-color .25s, opacity .3s, transform .3s, background .25s;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.project-card:hover { border-color: var(--accent); }
.project-card.is-open { border-color: var(--accent); }
.project-card.is-dimmed { opacity: .55; transform: scale(.98); }
.project-card.is-dimmed:hover { opacity: .85; }

.project-summary {
    padding: 1.8rem;
    display: flex;
    flex-direction: column;
    gap: .55rem;
    flex: 1;
}
.project-title {
    font-family: var(--font-display);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1.15;
    margin: 0;
}
.project-client {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
    margin-top: -.2rem;
}
.project-hook {
    font-size: .92rem;
    color: var(--light-text);
    font-weight: 300;
    line-height: 1.5;
    margin: .4rem 0 0;
}
.project-tags {
    display: flex; flex-wrap: wrap; gap: .35rem;
    margin-top: .3rem;
}
.project-tags .tag { font-size: .68rem; }

.project-links {
    display: flex; flex-wrap: wrap; gap: .5rem;
    margin-top: .5rem;
}
.project-link-btn {
    display: inline-flex; align-items: center; gap: .45rem;
    font-size: .78rem;
    font-weight: 600;
    letter-spacing: .03em;
    color: var(--white);
    background: var(--accent);
    border: 1px solid var(--accent);
    padding: .45rem .9rem;
    border-radius: var(--radius);
    transition: background .2s, border-color .2s, transform .15s;
}
.project-link-btn:hover {
    background: var(--accent2);
    border-color: var(--accent2);
    transform: translateY(-1px);
}
.project-link-btn i { font-size: .9rem; }

.project-toggle {
    margin-top: auto;
    align-self: flex-start;
    display: inline-flex; align-items: center; gap: .45rem;
    background: transparent;
    border: none;
    padding: .8rem 0 0;
    font-family: var(--font-display);
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--accent);
    cursor: pointer;
}
.project-toggle:hover { color: var(--accent2); }
.project-toggle i { transition: transform .3s; }
.project-card.is-open .project-toggle i { transform: rotate(180deg); }
.project-card.is-open .toggle-label::after { content: ' (close)'; opacity: .7; }

.project-details {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows .35s ease;
}
.project-details > .project-details-inner {
    overflow: hidden;
    min-height: 0;
    padding: 0 1.8rem;
    border-top: 1px solid transparent;
    -webkit-mask-image: linear-gradient(to bottom, #000 60%, transparent 100%);
            mask-image: linear-gradient(to bottom, #000 60%, transparent 100%);
    transition: padding .35s ease, border-color .35s ease, -webkit-mask-image .35s ease, mask-image .35s ease;
}
.project-card.is-open .project-details {
    grid-template-rows: 1fr;
}
.project-card.is-open .project-details > .project-details-inner {
    padding: 1.4rem 1.8rem 1.8rem;
    border-top-color: var(--border);
    -webkit-mask-image: linear-gradient(to bottom, #000 100%, transparent 100%);
            mask-image: linear-gradient(to bottom, #000 100%, transparent 100%);
}
.case-item {
    margin-bottom: 1.1rem;
}
.case-item-label {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--light-text);
    margin-bottom: .25rem;
}
.case-item p {
    font-size: .88rem;
    color: var(--text);
    font-weight: 300;
    line-height: 1.6;
    margin: 0;
}
.case-result {
    background: rgba(65,149,219,.08);
    border-left: 3px solid var(--accent);
    padding: .8rem 1rem;
    border-radius: 0 var(--radius) var(--radius) 0;
}
.case-result p {
    color: var(--text);
}

/* ─── PROCESS ─────────────────────────── */
.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: .4rem;
    background: transparent;
}
.process-step {
    --arrow-size: 28px;
    --border-w: 2px;
    background: transparent;
    position: relative;
    padding: var(--border-w);
}
.process-step::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--border);
    clip-path: polygon(
        0 0,
        calc(100% - var(--arrow-size)) 0,
        100% 50%,
        calc(100% - var(--arrow-size)) 100%,
        0 100%,
        var(--arrow-size) 50%
    );
    z-index: 0;
}
.process-step::after {
    content: '';
    position: absolute;
    inset: var(--border-w);
    background: var(--bg2);
    clip-path: polygon(
        0 0,
        calc(100% - var(--arrow-size) + 1px) 0,
        100% 50%,
        calc(100% - var(--arrow-size) + 1px) 100%,
        0 100%,
        var(--arrow-size) 50%
    );
    z-index: 0;
}
.process-step:first-child::before {
    clip-path: polygon(
        0 0,
        calc(100% - var(--arrow-size)) 0,
        100% 50%,
        calc(100% - var(--arrow-size)) 100%,
        0 100%
    );
}
.process-step:first-child::after {
    clip-path: polygon(
        0 0,
        calc(100% - var(--arrow-size) + 1px) 0,
        100% 50%,
        calc(100% - var(--arrow-size) + 1px) 100%,
        0 100%
    );
}
.process-step:last-child::before {
    clip-path: polygon(
        0 0,
        100% 0,
        100% 100%,
        0 100%,
        var(--arrow-size) 50%
    );
}
.process-step:last-child::after {
    clip-path: polygon(
        0 0,
        100% 0,
        100% 100%,
        0 100%,
        var(--arrow-size) 50%
    );
}
.process-step:nth-child(1)::after { background: var(--surface); }
.process-step:nth-child(2)::after { background: var(--bg2); }
.process-step:nth-child(3)::after { background: rgba(28,108,193,0.95); }
.process-step:nth-child(3)::before { background: var(--accent); }
.process-step:nth-child(3) h3,
.process-step:nth-child(3) p {
    color: var(--white);
}
.process-step:nth-child(3) p { font-weight: 300; }
.process-step-inner {
    position: relative;
    z-index: 1;
    padding: 2rem 2.5rem 2rem 3rem;
}
.process-step:first-child .process-step-inner { padding-left: 2rem; }
.process-step:last-child .process-step-inner { padding-right: 2rem; }
.process-step h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: .6rem;
}
.process-step p {
    font-size: .88rem;
    color: var(--light-text);
    font-weight: 300;
    line-height: 1.65;
}

/* ─── TUTORING ────────────────────────── */
#tutoring {
    background: var(--bg2);
}
.tutoring-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}
.tutoring-text .section-title { margin-bottom: .8rem; }
.tutoring-text p {
    color: var(--light-text);
    font-size: .95rem;
    font-weight: 300;
    line-height: 1.75;
    margin-bottom: 2rem;
}
.inline-link {
    color: var(--accent);
    font-weight: 500;
    text-decoration: none;
    border-bottom: 1px solid rgba(65,149,219,.35);
    transition: color .2s, border-color .2s;
}
.inline-link:hover {
    color: var(--accent2);
    border-bottom-color: var(--accent2);
}
.tutoring-features {
    list-style: none;
    display: flex; flex-direction: column; gap: .8rem;
    margin-bottom: 2rem;
}
.tutoring-features li {
    display: flex; align-items: flex-start; gap: .7rem;
    font-size: .9rem;
    color: var(--text);
    font-weight: 300;
}
.tutoring-features li::before {
    content: '→';
    color: var(--accent);
    font-weight: 700;
    flex-shrink: 0;
    margin-top: .05em;
}
.tutoring-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
}
.tutoring-card-label {
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--accent2);
    margin-bottom: 1.2rem;
}
.tutoring-card h4 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: .5rem;
}
.tutoring-card p {
    font-size: .85rem;
    color: var(--muted);
    font-weight: 300;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}
.session-types {
    display: flex; flex-direction: column; gap: .6rem;
    margin-bottom: 1.5rem;
}
.session-type {
    display: flex; align-items: center; gap: .7rem;
    background: var(--bg2);
    border: 1px solid var(--border);
    padding: .7rem 1rem;
    border-radius: var(--radius);
    font-size: .85rem;
    color: var(--text);
}
.session-type-icon { font-size: 1rem; }
.btn-outline {
    display: inline-block;
    border: 1px solid var(--accent);
    color: var(--accent);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: .88rem;
    padding: .65rem 1.4rem;
    border-radius: var(--radius);
    transition: background .2s, color .2s;
    cursor: pointer;
    text-align: center;
    width: 100%;
}
.btn-outline:hover { background: var(--accent); color: var(--white); }



/* ─── CTA FOOTER ──────────────────────── */
.cta-section {
    background: var(--surface);
    border-top: 1px solid var(--border);
    text-align: center;
    padding: 6rem 2rem;
}
.cta-section .section-title {
    font-size: clamp(2rem, 4vw, 3.2rem);
    max-width: 800px;
    margin: 0 auto 1.2rem;
}
.cta-section p {
    color: var(--light-text);
    font-size: 1rem;
    font-weight: 300;
    max-width: 460px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}
.cta-section .btn-primary {
    display: inline-block;
}
.cta-alt {
    display: block;
    margin-top: 2rem;
    font-size: .85rem;
    color: var(--muted);
}
.cta-alt a {
    color: var(--text);
    border-bottom: 1px solid var(--border);
    padding-bottom: 1px;
    transition: border-color .2s;
}
.cta-alt a:hover { border-color: var(--muted); }

/* ─── FOOTER ──────────────────────────── */
footer {
    background: var(--accent-dark);
    border-top: 1px solid var(--accent-dark);
    padding: 2rem 7rem 2rem 2rem;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}
.footer-links {
    display: flex; gap: 1.4rem; list-style: none;
    align-items: center;
}
.footer-links a {
    display: inline-flex;
    align-items: center; justify-content: center;
    font-size: 1.25rem;
    color: var(--white);
    transition: opacity .2s, transform .15s;
    opacity: .9;
}
.footer-links a:hover { opacity: 1; transform: translateY(-2px); }
.footer-copy {
    font-size: .78rem;
    color: rgba(255,255,255,.7);
}

/* ─── BACK TO TOP ─────────────────────── */
#backToTop {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    width: 44px;
    height: 44px;
    display: flex; align-items: center; justify-content: center;
    background: var(--accent);
    color: var(--white);
    border: 2px solid var(--white);
    border-radius: 50%;
    font-size: 1rem;
    box-shadow: 0 6px 18px rgba(0,0,0,.35);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity .25s, transform .25s, visibility .25s, background .2s;
    z-index: 90;
    cursor: pointer;
}
#backToTop.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
#backToTop:hover { background: var(--accent2); }
@media (min-width: 1025px) {
    #backToTop i { transform: translateX(-.5px); }
}

/* ─── FADE IN ANIMATION ───────────────── */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}
.fade-in {
    animation: fadeUp .65s ease both;
}
.fade-in-delay-1 { animation-delay: .12s; }
.fade-in-delay-2 { animation-delay: .24s; }
.fade-in-delay-3 { animation-delay: .36s; }
.fade-in-delay-4 { animation-delay: .48s; }

/* ─── RESPONSIVE ──────────────────────── */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .projects-grid,
    .projects-grid[data-open-index="0"],
    .projects-grid[data-open-index="1"],
    .projects-grid[data-open-index="2"] {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    .project-card.is-dimmed { transform: none; }
    .process-steps { grid-template-columns: 1fr; gap: .5rem; }
    .process-step::before,
    .process-step::after,
    .process-step:first-child::before,
    .process-step:first-child::after,
    .process-step:last-child::before,
    .process-step:last-child::after {
        clip-path: none;
    }
    /* Default (middle steps): notch on top + point on bottom */
    .process-step::before {
        clip-path: polygon(
            0 0,
            50% var(--arrow-size),
            100% 0,
            100% calc(100% - var(--arrow-size)),
            50% 100%,
            0 calc(100% - var(--arrow-size))
        );
    }
    .process-step::after {
        clip-path: polygon(
            0 1px,
            50% calc(var(--arrow-size) + 1px),
            100% 1px,
            100% calc(100% - var(--arrow-size) + 1px),
            50% 100%,
            0 calc(100% - var(--arrow-size) + 1px)
        );
    }
    /* First step: flat top, point on bottom */
    .process-step:first-child::before {
        clip-path: polygon(
            0 0,
            100% 0,
            100% calc(100% - var(--arrow-size)),
            50% 100%,
            0 calc(100% - var(--arrow-size))
        );
    }
    .process-step:first-child::after {
        clip-path: polygon(
            0 0,
            100% 0,
            100% calc(100% - var(--arrow-size) + 1px),
            50% 100%,
            0 calc(100% - var(--arrow-size) + 1px)
        );
    }
    /* Last step: notch on top, flat bottom */
    .process-step:last-child::before {
        clip-path: polygon(
            0 0,
            50% var(--arrow-size),
            100% 0,
            100% 100%,
            0 100%
        );
    }
    .process-step:last-child::after {
        clip-path: polygon(
            0 1px,
            50% calc(var(--arrow-size) + 1px),
            100% 1px,
            100% 100%,
            0 100%
        );
    }
    /* Padding adaptado a la forma: extra arriba si hay muerde, extra abajo si hay punta */
    .process-step:first-child .process-step-inner { padding: 1.8rem 1.8rem 2.8rem; }
    .process-step:nth-child(2) .process-step-inner { padding: 2.8rem 1.8rem; }
    .process-step:last-child .process-step-inner { padding: 2.8rem 1.8rem 1.8rem; }
    .tutoring-inner { grid-template-columns: 1fr; gap: 2.5rem; }
    .about-inner { grid-template-columns: 1fr; gap: 2rem; }
    .about-aside { align-items: center; }
    .about-photo { max-width: 240px; aspect-ratio: 1/1; }
    .about-links { justify-content: center; }
}

/* ─── 2K / LARGE SCREENS ─────────────── */
@media (min-width: 1800px) {
    :root { --max-w: 1400px; }
    nav { height: 72px; padding: 0 3rem; }
    section { padding: 7rem 3rem; }
    .hero { padding: 10rem 3rem 6rem; }
    .trust-bar { padding: 1.8rem 3rem; }
    footer { padding: 1rem 5rem 1rem 5rem; }
}

@media (min-width: 2200px) {
    :root { --max-w: 1700px; }
}