/* ============================================================
   MATTEO FERRETTI .PRO
   Revenue Systems & Sales Automation
   Palette: Avorio + Nero + Oro Antico
   ============================================================ */

:root {
    --bg: #F5F2ED;
    --bg-alt: #EDE9E0;
    --bg-dark: #0D0D0D;
    --ink: #0D0D0D;
    --ink-soft: #4A4A47;
    --ink-mute: #7A7770;
    --gold: #C8A96E;
    --gold-dark: #A88A4E;
    --line: #D8D3C8;
    --line-strong: #1a1a1a;

    --font-display: 'Barlow Condensed', 'Arial Narrow', sans-serif;
    --font-body: 'Source Serif 4', 'Georgia', serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;

    --maxw: 1100px;
    --pad-x: clamp(1.25rem, 4vw, 2.5rem);
    --section-y: clamp(4rem, 9vw, 7rem);

    --ease: cubic-bezier(.22,.61,.36,1);
}

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

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

body {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.65;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }

button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

::selection { background: var(--gold); color: var(--bg-dark); }

/* ===== TYPOGRAPHY ===== */

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.01em;
    text-transform: none;
}

.eyebrow {
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 500;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--gold-dark);
    display: inline-block;
    margin-bottom: 1.5rem;
}

.eyebrow::before {
    content: "";
    display: inline-block;
    width: 28px;
    height: 1px;
    background: var(--gold-dark);
    vertical-align: middle;
    margin-right: .8rem;
    transform: translateY(-2px);
}

.section-title {
    font-size: clamp(2.2rem, 5.5vw, 4rem);
    font-weight: 700;
    margin-bottom: 3rem;
    max-width: 22ch;
}

.section-title .gold { color: var(--gold-dark); font-style: italic; font-family: var(--font-body); font-weight: 600; }

.lead {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--ink-soft);
    max-width: 60ch;
}

/* ===== CONTAINER ===== */

.container {
    width: 100%;
    max-width: var(--maxw);
    margin: 0 auto;
    padding-left: var(--pad-x);
    padding-right: var(--pad-x);
}

section { padding: var(--section-y) 0; position: relative; }

section + section { border-top: 1px solid var(--line); }

.section-alt { background: var(--bg-alt); }

/* ===== NAVBAR ===== */

.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(245, 242, 237, 0.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid transparent;
    transition: border-color .25s var(--ease), background .25s var(--ease);
}

.navbar.scrolled { border-bottom-color: var(--line); }

.navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    font-family: var(--font-display);
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: .02em;
    display: flex;
    align-items: center;
    gap: .55rem;
}

.logo__mark {
    width: 32px; height: 32px;
    border: 1.5px solid var(--ink);
    display: inline-grid; place-items: center;
    font-size: .85rem;
    font-weight: 700;
}

.logo__dot { color: var(--gold-dark); }

.nav-links {
    display: flex;
    gap: 2.2rem;
    list-style: none;
    font-family: var(--font-mono);
    font-size: .85rem;
    letter-spacing: .04em;
}

.nav-links a {
    position: relative;
    padding: .25rem 0;
}

.nav-links a:hover { color: var(--gold-dark); }

.nav-links a::after {
    content: "";
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 1px;
    background: var(--gold-dark);
    transition: width .3s var(--ease);
}

.nav-links a:hover::after { width: 100%; }

.nav-toggle {
    display: none;
    width: 32px; height: 32px;
    flex-direction: column; justify-content: center; gap: 5px;
}

.nav-toggle span {
    width: 22px; height: 1.5px; background: var(--ink);
    transition: transform .3s var(--ease), opacity .3s var(--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); }

/* ===== BUTTONS ===== */

.btn {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    padding: 1rem 1.6rem;
    font-family: var(--font-mono);
    font-size: .9rem;
    font-weight: 500;
    letter-spacing: .05em;
    text-transform: uppercase;
    border: 1px solid var(--ink);
    transition: all .25s var(--ease);
    cursor: pointer;
    line-height: 1;
}

.btn--primary {
    background: var(--ink);
    color: var(--bg);
}

.btn--primary:hover {
    background: var(--gold-dark);
    border-color: var(--gold-dark);
    color: var(--bg);
    transform: translateY(-2px);
}

.btn--ghost {
    background: transparent;
    color: var(--ink);
    border-color: var(--ink);
}

.btn--ghost:hover {
    background: var(--ink);
    color: var(--bg);
}

.btn--link {
    border: 0;
    padding: .5rem 0;
    text-transform: none;
    letter-spacing: .02em;
    color: var(--ink-soft);
    border-bottom: 1px solid var(--line);
    border-radius: 0;
}

.btn--link:hover { color: var(--gold-dark); border-bottom-color: var(--gold-dark); }

.btn--lg { padding: 1.15rem 2rem; font-size: .95rem; }

.btn .arrow { transition: transform .25s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

/* ===== HERO ===== */

.hero {
    padding-top: calc(72px + var(--section-y));
    padding-bottom: var(--section-y);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(var(--line) 1px, transparent 1px),
      linear-gradient(90deg, var(--line) 1px, transparent 1px);
    background-size: 80px 80px;
    opacity: .35;
    mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 40%, black 30%, transparent 80%);
    pointer-events: none;
}

.hero__inner { position: relative; }

.hero__badge {
    font-family: var(--font-mono);
    font-size: .8rem;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--ink-soft);
    margin-bottom: 2rem;
    display: inline-flex;
    align-items: center;
    gap: .8rem;
}

.hero__badge::before {
    content: "";
    width: 8px; height: 8px;
    background: var(--gold);
    border-radius: 50%;
    animation: pulse 2s var(--ease) infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.4); opacity: .5; }
}

.hero__title {
    font-size: clamp(2.6rem, 7.5vw, 5.5rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
    max-width: 16ch;
}

.hero__title em {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 600;
    color: var(--gold-dark);
}

.hero__subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--ink-soft);
    max-width: 50ch;
    margin-bottom: 2.5rem;
    line-height: 1.55;
}

/* ===== HERO CONVERSATIONAL INPUT ===== */

.hero__chat {
    max-width: 600px;
    margin-bottom: 2.5rem;
}

.hero__chat-greeting {
    font-family: var(--font-body);
    font-size: clamp(1.05rem, 1.8vw, 1.35rem);
    font-style: italic;
    color: var(--ink);
    line-height: 1.4;
    margin-bottom: 1rem;
    min-height: 2.8em;
}

.hero__chat-hint {
    font-family: var(--font-mono);
    font-size: .75rem;
    color: var(--ink-mute);
    margin-top: .8rem;
    letter-spacing: .04em;
    line-height: 1.5;
}

.hero__input-wrap {
    position: relative;
}

.hero__input {
    width: 100%;
    padding: 1.35rem 4rem 1.35rem 1.5rem;
    font-family: var(--font-body);
    font-size: 1.05rem;
    color: var(--ink);
    background: var(--bg);
    border: 1.5px solid var(--ink);
    outline: none;
    transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.hero__input:focus {
    border-color: var(--gold-dark);
    box-shadow: 0 0 0 4px rgba(200, 169, 110, 0.15);
}

.hero__input::placeholder { color: var(--ink-mute); }

.hero__input-btn {
    position: absolute;
    right: 8px; top: 50%;
    transform: translateY(-50%);
    width: 44px; height: 44px;
    background: var(--ink);
    color: var(--bg);
    display: grid; place-items: center;
    transition: background .25s var(--ease);
}

.hero__input-btn:hover { background: var(--gold-dark); }

.hero__chat-greeting .blinking { animation: blink 1s step-end infinite; color: var(--gold-dark); margin-left: .12em; font-style: normal; }

@keyframes blink { 50% { opacity: 0; } }

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
}

.hero__proof {
    display: flex;
    flex-wrap: wrap;
    gap: 2.5rem;
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 1px solid var(--line);
}

.proof-item { display: flex; flex-direction: column; gap: .25rem; }

.proof-num {
    font-family: var(--font-display);
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1;
    color: var(--ink);
}

.proof-label {
    font-family: var(--font-mono);
    font-size: .75rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--ink-mute);
}

/* ===== PROBLEM ===== */

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 1rem;
}

.problem-card {
    padding: 2rem 1.75rem;
    background: var(--bg);
    border: 1px solid var(--line);
    border-top: 3px solid var(--ink);
    transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.problem-card:hover {
    transform: translateY(-4px);
    border-top-color: var(--gold-dark);
}

.problem-card__tag {
    font-family: var(--font-mono);
    font-size: .75rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 1rem;
    display: block;
}

.problem-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1.25rem;
    line-height: 1.15;
}

.problem-card p {
    color: var(--ink-soft);
    font-size: .98rem;
    line-height: 1.6;
}

.problem-card p + p { margin-top: .75rem; }

.problem-card--accent {
    background: var(--ink);
    color: var(--bg);
    border-color: var(--ink);
    border-top-color: var(--gold);
}

.problem-card--accent .problem-card__tag,
.problem-card--accent p { color: rgba(245, 242, 237, .75); }

.problem-card--accent:hover { border-top-color: var(--gold); }

/* ===== ABOUT ===== */

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about__bio p {
    font-size: 1.05rem;
    color: var(--ink-soft);
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.about__bio strong {
    color: var(--ink);
    font-weight: 600;
}

.about__quote {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 700;
    line-height: 1.15;
    padding: 2rem 0 2rem 2rem;
    border-left: 3px solid var(--gold-dark);
    color: var(--ink);
}

.about__quote em { font-family: var(--font-body); font-style: italic; font-weight: 600; }

.about__photo {
    margin: 0;
    position: relative;
    max-width: 320px;
    justify-self: end;
}

.about__photo img {
    width: 100%;
    height: auto;
    display: block;
    background: var(--bg-alt);
    filter: contrast(1.02);
}

.about__photo::before {
    content: "";
    position: absolute;
    top: -8px; left: -8px;
    width: 100%; height: 100%;
    border: 1px solid var(--gold-dark);
    pointer-events: none;
    z-index: -1;
}

.about__photo figcaption {
    margin-top: 1rem;
    font-family: var(--font-mono);
    font-size: .75rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--ink-mute);
    display: flex;
    align-items: center;
    gap: .6rem;
}

.about__photo figcaption::before {
    content: "";
    width: 18px;
    height: 1px;
    background: var(--gold-dark);
    flex-shrink: 0;
}

/* ===== CLAIM BAR ===== */

.claim-bar {
    background: var(--bg-dark);
    color: var(--bg);
    padding: clamp(3rem, 6vw, 5rem) 0;
    text-align: center;
    border-top: 1px solid var(--gold-dark);
    border-bottom: 1px solid var(--gold-dark);
}

.claim-bar__text {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 4vw, 2.8rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.01em;
    max-width: 28ch;
    margin: 0 auto;
    color: var(--bg);
}

.claim-bar__text em {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 600;
    color: var(--gold);
}

.about__meta {
    margin-top: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2rem;
}

.about__meta-item {
    font-family: var(--font-mono);
    font-size: .85rem;
    color: var(--ink-soft);
    display: flex;
    align-items: center;
    gap: .5rem;
}

.about__meta-item::before {
    content: "";
    width: 6px; height: 6px;
    background: var(--gold-dark);
}

/* ===== SERVICES (Cosa Faccio) ===== */

.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border: 1px solid var(--line-strong);
    margin-top: 1rem;
}

.service-col {
    padding: 3rem 2.5rem;
    border-right: 1px solid var(--line-strong);
    background: var(--bg);
    transition: background .3s var(--ease);
}

.service-col:last-child { border-right: 0; }

.service-col:hover { background: var(--bg-alt); }

.service-col__tag {
    font-family: var(--font-mono);
    font-size: .8rem;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--gold-dark);
    margin-bottom: 1.25rem;
    display: block;
}

.service-col h3 {
    font-size: 1.65rem;
    line-height: 1.15;
    margin-bottom: 1.75rem;
}

.service-col ul {
    list-style: none;
}

.service-col li {
    padding: .85rem 0;
    border-bottom: 1px solid var(--line);
    font-size: 1rem;
    color: var(--ink-soft);
    display: flex;
    align-items: center;
    gap: .85rem;
}

.service-col li::before {
    content: "\2192";
    color: var(--gold-dark);
    font-family: var(--font-mono);
    font-weight: 700;
}

.service-col li:last-child { border-bottom: 0; }

/* ===== METHOD ===== */

.method-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-top: 1rem;
}

.method-step {
    padding: 2.5rem 1.75rem;
    border-right: 1px solid var(--line);
    position: relative;
}

.method-step:last-child { border-right: 0; }

.method-step__num {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 700;
    color: var(--gold);
    line-height: 1;
    margin-bottom: 1.5rem;
    display: block;
}

.method-step h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: .02em;
}

.method-step p {
    color: var(--ink-soft);
    font-size: .98rem;
    line-height: 1.6;
}

/* ===== MODULES (Differenziazione) ===== */

.modules-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 1rem;
}

.module-card {
    padding: 2.5rem 2rem;
    background: var(--bg-dark);
    color: var(--bg);
    border: 1px solid var(--bg-dark);
    position: relative;
    overflow: hidden;
    transition: transform .35s var(--ease);
}

.module-card:hover { transform: translateY(-6px); }

.module-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gold);
}

.module-card__index {
    font-family: var(--font-mono);
    font-size: .8rem;
    letter-spacing: .15em;
    color: var(--gold);
    margin-bottom: 1.25rem;
    display: block;
}

.module-card h3 {
    font-size: 1.6rem;
    line-height: 1.1;
    margin-bottom: 1.25rem;
    color: var(--bg);
}

.module-card h3 sup {
    font-size: .55em;
    color: var(--gold);
    font-family: var(--font-body);
    font-weight: 400;
    margin-left: .15rem;
    vertical-align: super;
}

.module-card p {
    color: rgba(245, 242, 237, .8);
    font-size: 1rem;
    line-height: 1.65;
}

/* ===== CASE STUDIES ===== */

.cases {
    display: flex;
    flex-direction: column;
    gap: 0;
    margin-top: 1rem;
    border-top: 1px solid var(--line-strong);
}

.case {
    padding: 3rem 0;
    border-bottom: 1px solid var(--line-strong);
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 3rem;
    align-items: start;
}

.case__meta {
    font-family: var(--font-mono);
    font-size: .8rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--gold-dark);
}

.case__meta-num {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--ink);
    display: block;
    margin-bottom: .5rem;
    line-height: 1;
}

.case__body h3 {
    font-size: clamp(1.5rem, 2.6vw, 1.9rem);
    line-height: 1.2;
    margin-bottom: 1rem;
}

.case__body p {
    color: var(--ink-soft);
    font-size: 1.02rem;
    line-height: 1.7;
    margin-bottom: 1rem;
    max-width: 65ch;
}

.case__result {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px dashed var(--line);
    display: flex;
    gap: 1rem;
    align-items: baseline;
    flex-wrap: wrap;
}

.case__result-label {
    font-family: var(--font-mono);
    font-size: .75rem;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--gold-dark);
    white-space: nowrap;
}

.case__result-text {
    font-size: 1rem;
    color: var(--ink);
    font-weight: 600;
}

/* ===== TESTIMONIALS ===== */

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    margin-top: 1rem;
    border: 1px solid var(--line);
}

.testimonial {
    padding: 2.25rem 2rem;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    background: var(--bg);
}

.testimonial:nth-child(2n) { border-right: 0; }
.testimonial:nth-last-child(-n+2) { border-bottom: 0; }

.testimonial__quote {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;
    color: var(--ink);
    margin-bottom: 1.5rem;
    font-style: italic;
    position: relative;
}

.testimonial__author {
    display: flex;
    align-items: center;
    gap: .85rem;
    padding-top: 1rem;
    border-top: 1px solid var(--line);
}

.testimonial__avatar {
    width: 40px; height: 40px;
    background: var(--ink);
    color: var(--bg);
    display: grid; place-items: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: .9rem;
    letter-spacing: .05em;
    flex-shrink: 0;
}

.testimonial__name {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
    line-height: 1.2;
}

.testimonial__role {
    font-family: var(--font-mono);
    font-size: .72rem;
    letter-spacing: .04em;
    color: var(--ink-mute);
    text-transform: uppercase;
    display: block;
    margin-top: .15rem;
}

/* ===== CTA FINALE ===== */

.final-cta {
    background: var(--bg-dark);
    color: var(--bg);
    text-align: center;
    padding: clamp(5rem, 10vw, 8rem) 0;
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(200, 169, 110, .08) 1px, transparent 1px),
      linear-gradient(90deg, rgba(200, 169, 110, .08) 1px, transparent 1px);
    background-size: 80px 80px;
    pointer-events: none;
}

.final-cta__inner { position: relative; }

.final-cta h2 {
    font-size: clamp(2rem, 5.5vw, 3.8rem);
    line-height: 1.05;
    margin-bottom: 1.5rem;
    max-width: 22ch;
    margin-left: auto; margin-right: auto;
    color: var(--bg);
}

.final-cta h2 em {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 600;
    color: var(--gold);
}

.final-cta p {
    font-size: 1.15rem;
    color: rgba(245, 242, 237, .8);
    max-width: 55ch;
    margin: 0 auto 2.5rem;
    line-height: 1.6;
}

.final-cta .btn--primary {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--bg-dark);
}

.final-cta .btn--primary:hover {
    background: var(--bg);
    border-color: var(--bg);
    color: var(--bg-dark);
}

.final-cta__micro {
    font-family: var(--font-mono);
    font-size: .8rem;
    letter-spacing: .1em;
    color: var(--gold);
    margin-top: 1.5rem;
    font-style: normal;
}

/* ===== FOOTER ===== */

.footer {
    padding: 3rem 0 2rem;
    background: var(--bg);
    border-top: 1px solid var(--line);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2.5rem;
}

.footer__brand .logo { margin-bottom: 1rem; }

.footer__brand p {
    color: var(--ink-soft);
    font-size: .95rem;
    max-width: 30ch;
}

.footer__col h4 {
    font-family: var(--font-mono);
    font-size: .75rem;
    font-weight: 500;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 1rem;
}

.footer__col a {
    display: block;
    padding: .35rem 0;
    color: var(--ink);
    font-size: .98rem;
}

.footer__col a:hover { color: var(--gold-dark); }

.footer__bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    font-family: var(--font-mono);
    font-size: .78rem;
    color: var(--ink-mute);
    letter-spacing: .03em;
}

/* ===== ANIMATIONS ===== */

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .8s var(--ease), transform .8s var(--ease);
}

.reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
}

/* ===== MOBILE MENU ===== */

.mobile-menu {
    position: fixed;
    inset: 72px 0 0 0;
    background: var(--bg);
    z-index: 99;
    padding: 2.5rem var(--pad-x);
    transform: translateY(-100%);
    transition: transform .35s var(--ease);
    border-bottom: 1px solid var(--line);
    visibility: hidden;
}

.mobile-menu.open { transform: translateY(0); visibility: visible; }

.mobile-menu ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.mobile-menu a {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
}

.mobile-menu .btn {
    margin-top: 1rem;
    align-self: flex-start;
}

/* ===== RESPONSIVE ===== */

@media (max-width: 960px) {
    .problem-grid,
    .modules-grid { grid-template-columns: 1fr; }
    .services-grid,
    .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .about__photo { max-width: 280px; justify-self: start; }
    .service-col { border-right: 0; border-bottom: 1px solid var(--line-strong); }
    .service-col:last-child { border-bottom: 0; }
    .method-steps { grid-template-columns: repeat(2, 1fr); }
    .method-step:nth-child(2) { border-right: 0; }
    .method-step:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
    .case { grid-template-columns: 1fr; gap: 1.5rem; }
    .case__meta-num { font-size: 2.2rem; }
    .testimonials-grid { grid-template-columns: 1fr; }
    .testimonial { border-right: 0; }
    .testimonial:not(:last-child) { border-bottom: 1px solid var(--line); }
    .testimonial:last-child { border-bottom: 0; }
    .footer__grid { grid-template-columns: 1fr 1fr; }
    .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
    .nav-links { display: none; }
    .nav-toggle { display: flex; }
    .navbar__cta { display: none; }
    .method-steps { grid-template-columns: 1fr; }
    .method-step { border-right: 0; border-bottom: 1px solid var(--line); }
    .method-step:last-child { border-bottom: 0; }
    .hero__proof { gap: 1.5rem 2rem; }
    .proof-num { font-size: 1.75rem; }
    .footer__grid { grid-template-columns: 1fr; gap: 2rem; }
    .footer__brand { grid-column: auto; }
    .hero__actions { flex-direction: column; align-items: stretch; }
    .hero__actions .btn { justify-content: center; }
    .about__quote { padding: 1.25rem 0 1.25rem 1.25rem; }
}