/* ---------------------------------------------------------------
   TARSIM | Design Advisory Studio
   styles.css
   --------------------------------------------------------------- */

/* ----- Local Font Faces ----- */
@font-face {
    font-family: 'Instrument Serif';
    src: url('fonts/instrument-serif-latin-400-normal.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Instrument Serif';
    src: url('fonts/instrument-serif-latin-400-italic.woff2') format('woff2');
    font-weight: 400;
    font-style: italic;
    font-display: swap;
}
@font-face {
    font-family: 'DM Sans';
    src: url('fonts/dm-sans-latin-300-normal.woff2') format('woff2');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'DM Sans';
    src: url('fonts/dm-sans-latin-400-normal.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'DM Sans';
    src: url('fonts/dm-sans-latin-500-normal.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'DM Sans';
    src: url('fonts/dm-sans-latin-300-italic.woff2') format('woff2');
    font-weight: 300;
    font-style: italic;
    font-display: swap;
}
@font-face {
    font-family: 'DM Sans';
    src: url('fonts/dm-sans-latin-400-italic.woff2') format('woff2');
    font-weight: 400;
    font-style: italic;
    font-display: swap;
}

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

/* ----- Theme Variables ----- */
:root {
    --serif: 'Instrument Serif', Georgia, serif;
    --sans: 'DM Sans', -apple-system, sans-serif;
    --transition-theme: 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Dark Theme (default) ── */
[data-theme="dark"] {
    --bg: #0a0a0a;
    --bg-elevated: #111111;
    --bg-card: #0a0a0a;
    --bg-card-hover: #1a1a1a;
    --fg: #f5f5f0;
    --fg-muted: #888888;
    --fg-subtle: #bbbbbb;
    --border: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.2);
    --border-input: rgba(255, 255, 255, 0.15);
    --btn-primary-bg: #f5f5f0;
    --btn-primary-fg: #0a0a0a;
    --btn-primary-glow: rgba(245, 245, 240, 0.15);
    --btn-secondary-bg: transparent;
    --btn-secondary-fg: #f5f5f0;
    --btn-secondary-border: rgba(255, 255, 255, 0.15);
    --nav-bg: rgba(10, 10, 10, 0.9);
    --noise-opacity: 0.4;
    --step-hover-bg: #f5f5f0;
    --step-hover-fg: #0a0a0a;
    --toggle-bg: rgba(255, 255, 255, 0.08);
    --toggle-icon: #f5f5f0;
}

/* ── Light Theme ── */
[data-theme="light"] {
    --bg: #f5f5f0;
    --bg-elevated: #eaeae5;
    --bg-card: #f5f5f0;
    --bg-card-hover: #eaeae5;
    --fg: #0a0a0a;
    --fg-muted: #666666;
    --fg-subtle: #444444;
    --border: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.2);
    --border-input: rgba(0, 0, 0, 0.15);
    --btn-primary-bg: #0a0a0a;
    --btn-primary-fg: #f5f5f0;
    --btn-primary-glow: rgba(10, 10, 10, 0.1);
    --btn-secondary-bg: transparent;
    --btn-secondary-fg: #0a0a0a;
    --btn-secondary-border: rgba(0, 0, 0, 0.15);
    --nav-bg: rgba(245, 245, 240, 0.8);
    --noise-opacity: 0.15;
    --step-hover-bg: #0a0a0a;
    --step-hover-fg: #f5f5f0;
    --toggle-bg: rgba(0, 0, 0, 0.06);
    --toggle-icon: #0a0a0a;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--fg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    transition: background var(--transition-theme), color var(--transition-theme);
}

/* ----- Noise overlay ----- */
body::after {
    content: '';
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    pointer-events: none;
    z-index: 999;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    background-repeat: repeat;
    opacity: var(--noise-opacity);
    transition: opacity var(--transition-theme);
}

/* ----- Smooth reveal animations ----- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.stagger > * {
    transition-delay: calc(var(--i, 0) * 0.08s);
}

/* ---------------------------------------
   Navigation
   --------------------------------------- */
nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    background: var(--nav-bg);
    border-bottom: 1px solid var(--border);
    transition: padding 0.4s ease,
                background var(--transition-theme),
                border-color var(--transition-theme);
}
nav.scrolled { 
    /*padding: 1rem 3rem;*/
    position: fixed;
    z-index: 999999;
    top: 0;
    left: 0;
    }

.nav-logo {
    font-family: var(--serif);
    font-size: 1.6rem;
    letter-spacing: -0.02em;
    color: var(--fg);
    text-decoration: none;
    transition: color var(--transition-theme);
}
.nav-logo span { font-style:normal; opacity: 0.4; }

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

.nav-links {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}
.nav-links a {
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--fg-muted);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 400;
}
.nav-links a:hover { color: var(--fg); }

.nav-cta {
    padding: 0.6rem 1.6rem !important;
    border: 1px solid var(--border-input) !important;
    border-radius: 100px;
    color: var(--fg) !important;
    transition: all 0.3s !important;
}
.nav-cta:hover {
    background: var(--fg) !important;
    color: var(--bg) !important;
}

/* ----- Theme Toggle ----- */
.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--toggle-bg);
    color: var(--toggle-icon);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
}
.theme-toggle:hover {
    transform: scale(1.1);
    background: var(--fg);
    color: var(--bg);
}
.theme-toggle svg {
    width: 18px;
    height: 18px;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.3s;
    position: absolute;
}
.theme-toggle .icon-sun { opacity: 0; transform: rotate(-90deg) scale(0.5); }
.theme-toggle .icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }

[data-theme="light"] .theme-toggle .icon-sun { opacity: 1; transform: rotate(0deg) scale(1); }
[data-theme="light"] .theme-toggle .icon-moon { opacity: 0; transform: rotate(90deg) scale(0.5); }

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--fg);
    transition: all 0.3s;
}

/* ---------------------------------------
   Hero
   --------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8rem 3rem 4rem;
    position: relative;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--fg-muted);
    margin-bottom: 2.5rem;
    opacity: 0;
    animation: fadeUp 1s 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero-badge::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--fg);
    animation: pulse 2s infinite;
}

.hero h1 {
    cursor:default;
    font-family: var(--serif);
    font-size: clamp(3.2rem, 8vw, 7.5rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
    font-weight: 400;
    max-width: 1000px;
    opacity: 0;
    animation: fadeUp 1s 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hero h1 em { font-style: italic; opacity: 0.4; }

.hero-sub {
    max-width: 520px;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--fg-muted);
    margin-top: 2.5rem;
    font-weight: 300;
    opacity: 0;
    animation: fadeUp 1s 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-top: 3rem;
    opacity: 0;
    animation: fadeUp 1s 0.9s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.hero-scroll {
    position: absolute;
    bottom: 2.5rem;
    left: 3rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--fg-muted);
    opacity: 0;
    animation: fadeUp 1s 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.scroll-line {
    width: 40px; height: 1px;
    background: linear-gradient(90deg, var(--fg-muted), transparent);
    animation: scrollPulse 2s infinite;
}

/* ---------------------------------------
   Buttons
   --------------------------------------- */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.2rem;
    background: var(--btn-primary-bg);
    color: var(--btn-primary-fg);
    border: none;
    border-radius: 100px;
    font-size: 0.85rem;
    font-family: var(--sans);
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    font-weight: 500;
}
.btn-primary:hover {
    transform: scale(1.04);
    box-shadow: 0 0 40px var(--btn-primary-glow);
}
.btn-primary svg { transition: transform 0.3s; }
.btn-primary:hover svg { transform: translateX(3px); }

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2.2rem;
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-fg);
    border: 1px solid var(--btn-secondary-border);
    border-radius: 100px;
    font-size: 0.85rem;
    font-family: var(--sans);
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    text-decoration: none;
    font-weight: 400;
}
.btn-secondary:hover {
    border-color: var(--border-hover);
    background: var(--toggle-bg);
}

/* ---------------------------------------
   Marquee
   --------------------------------------- */
.marquee-wrap {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 0;
    overflow: hidden;
    white-space: nowrap;
    transition: border-color var(--transition-theme);
}
.marquee-track {
    display: flex;
    gap: 3rem;
    animation: marquee 30s linear infinite;
}
.marquee-item {
    font-family: var(--serif);
    font-size: 1rem;
    font-style: italic;
    color: var(--fg-muted);
    flex-shrink: 0;
}
.marquee-item::after { content: '·'; margin-left: 3rem; opacity: 0.3; }

/* ---------------------------------------
   Sections
   --------------------------------------- */
section {
    padding: 8rem 3rem;
}

.section-tag {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--fg-muted);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}
.section-tag::before {
    content: '';
    width: 30px; height: 1px;
    background: var(--fg-muted);
}

.section-title {
    font-family: var(--serif);
    font-size: clamp(2.2rem, 4.5vw, 4rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
    font-weight: 400;
    max-width: 700px;
    margin-bottom: 1.5rem;
}
.section-title em { font-style: italic; opacity: 0.4; }

.section-desc {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--fg-muted);
    max-width: 560px;
    font-weight: 300;
}

/* ---------------------------------------
   Services Grid
   --------------------------------------- */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    margin-top: 5rem;
    background: var(--border);
    border: 1px solid var(--border);
    transition: background var(--transition-theme), border-color var(--transition-theme);
}
.service-card {
    background: var(--bg-card);
    padding: 2.8rem 2.2rem;
    position: relative;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    cursor: default;
}
.service-card:hover { background: var(--bg-card-hover); }

.service-num {
    font-family: var(--serif);
    font-size: 0.85rem;
    color: var(--fg-muted);
    margin-bottom: 1.8rem;
    font-style: italic;
}
.service-card h3 {
    font-family: var(--serif);
    font-size: 1.4rem;
    font-weight: 400;
    letter-spacing: -0.01em;
    margin-bottom: 1rem;
    line-height: 1.25;
}
.service-card p {
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--fg-muted);
    font-weight: 300;
}
.service-tags {
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.service-tags span {
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 0.35rem 0.8rem;
    border: 1px solid var(--border-input);
    border-radius: 100px;
    color: var(--fg-subtle);
    transition: border-color var(--transition-theme), color var(--transition-theme);
}

/* ---------------------------------------
   Process
   --------------------------------------- */
.process-steps {
    margin-top: 5rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    position: relative;
}
.process-steps::before {
    content: '';
    position: absolute;
    top: 2.8rem;
    left: 10%; right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), var(--border), transparent);
    transition: background var(--transition-theme);
}
.process-step {
    text-align: center;
    padding: 0 1.5rem;
}
.step-num {
    width: 56px; height: 56px;
    border-radius: 50%;
    border: 1px solid var(--border-input);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    font-family: var(--serif);
    font-style: italic;
    font-size: 1.1rem;
    background: var(--bg);
    position: relative;
    z-index: 1;
    transition: all 0.4s;
}
.process-step:hover .step-num {
    border-color: var(--step-hover-bg);
    background: var(--step-hover-bg);
    color: var(--step-hover-fg);
}
.process-step h4 {
    font-family: var(--serif);
    font-size: 1.15rem;
    font-weight: 400;
    margin-bottom: 0.8rem;
}
.process-step p {
    font-size: 0.82rem;
    line-height: 1.7;
    color: var(--fg-muted);
    font-weight: 300;
}

/* ---------------------------------------
   Proof Bar
   --------------------------------------- */
.proof-bar {
    display: flex;
    justify-content: center;
    gap: 5rem;
    padding: 3rem;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    transition: border-color var(--transition-theme);
}
.proof-item { text-align: center; }
.proof-item .num {
    font-family: var(--serif);
    font-size: 1.8rem;
    margin-bottom: 0.3rem;
}
.proof-item .label {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--fg-muted);
}

/* ---------------------------------------
   Audience
   --------------------------------------- */
.audience-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 5rem;
}
.audience-card {
    border: 1px solid var(--border);
    padding: 3rem;
    position: relative;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}
.audience-card:hover { border-color: var(--border-hover); }
.audience-card .card-label {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--fg-muted);
    margin-bottom: 1.5rem;
}
.audience-card h3 {
    font-family: var(--serif);
    font-size: 1.8rem;
    font-weight: 400;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}
.audience-card > p {
    font-size: 0.9rem;
    line-height: 1.75;
    color: var(--fg-muted);
    font-weight: 300;
    margin-bottom: 2rem;
}
.audience-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}
.audience-list li {
    font-size: 0.82rem;
    color: var(--fg-subtle);
    padding-left: 1.2rem;
    position: relative;
    font-weight: 300;
}
.audience-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    opacity: 0.4;
}

/* ---------------------------------------
   About
   --------------------------------------- */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: start;
    margin-top: 4rem;
}
.about-text p {
    font-size: 1rem;
    line-height: 1.85;
    color: var(--fg-muted);
    font-weight: 300;
    margin-bottom: 1.5rem;
}
.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 3rem;
}
.stat {
    border-top: 1px solid var(--border-input);
    padding-top: 1.2rem;
    transition: border-color var(--transition-theme);
}
.stat-num {
    font-family: var(--serif);
    font-size: 2.5rem;
    font-weight: 400;
    letter-spacing: -0.03em;
}
.stat-label {
    font-size: 0.75rem;
    color: var(--fg-muted);
    letter-spacing: 0.05em;
    margin-top: 0.3rem;
    font-weight: 300;
}

.about-philosophy {
    border: 1px solid var(--border);
    padding: 3rem;
    transition: border-color var(--transition-theme);
}
.about-philosophy blockquote {
    font-family: var(--serif);
    font-size: 1.5rem;
    line-height: 1.5;
    font-weight: 400;
    font-style: italic;
    margin-bottom: 1.5rem;
    opacity: 0.8;
}
.about-philosophy p {
    font-size: 0.85rem;
    line-height: 1.8;
    color: var(--fg-muted);
    font-weight: 300;
}

/* ---------------------------------------
   Principal / Founder
   --------------------------------------- */
.principal {
    margin-top: 5rem;
    border: 1px solid var(--border);
    transition: border-color var(--transition-theme);
}
.principal-header {
    padding: 2.5rem 3rem 0;
}
.principal-intro {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}
.principal-label {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--fg-muted);
}
.principal-name {
    font-family: var(--serif);
    font-size: clamp(1.8rem, 3vw, 2.4rem);
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-top: 0.4rem;
}
.principal-name a{
    color: var(--serif);
    text-decoration: none;
    cursor: pointer;
    border-bottom: 1px solid var(--border-input);
    transition: border-color 0.3s, color var(--transition-theme);
}
.principal-name a:hover{
    color: var(--serif);
    text-decoration: none;
    border-color: var(--fg);
    cursor: pointer;
}
.principal-role {
    font-size: 0.85rem;
    color: var(--fg-muted);
    font-weight: 300;
    margin-top: 0.2rem;
    cursor: default;
}
.principal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    padding: 2rem 3rem 2.5rem;
}
.principal-bio p {
    font-size: 0.9rem;
    line-height: 1.8;
    color: var(--fg-muted);
    font-weight: 300;
    margin-bottom: 1rem;
}
.principal-bio p:last-child { margin-bottom: 0; }
.principal-bio strong {
    color: var(--fg);
    font-weight: 500;
}

/* ── Career Track ── */
.track-label {
    font-size: 0.65rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--fg-muted);
    margin-bottom: 1.2rem;
}
.track-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.track-item {
    display: flex;
    align-items: baseline;
    gap: 0.6rem;
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border);
    transition: border-color var(--transition-theme);
}
.track-item:first-child {
    border-top: 1px solid var(--border);
}
.track-role {
    font-size: 0.85rem;
    font-weight: 400;
    white-space: nowrap;
}
.track-sep {
    color: var(--fg-muted);
    opacity: 0.3;
}
.track-org {
    font-family: var(--serif);
    font-size: 0.95rem;
    font-style: italic;
}
.track-note {
    font-family: var(--sans);
    font-style: normal;
    font-size: 0.75rem;
    color: var(--fg-muted);
    font-weight: 300;
}

.team-note {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    margin-top: 4rem;
    padding: 2.5rem;
    border: 1px solid var(--border);
    max-width: 700px;
    transition: border-color var(--transition-theme);
}
.team-note-icon {
    width: 44px; height: 44px;
    border-radius: 50%;
    border: 1px solid var(--border-input);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: border-color var(--transition-theme);
}
.team-note p {
    font-size: 0.9rem;
    line-height: 1.75;
    color: var(--fg-muted);
    font-weight: 300;
}

/* ---------------------------------------
   CTA / Contact
   --------------------------------------- */
.cta-section {
    text-align: center;
    padding: 10rem 3rem;
    position: relative;
}
.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 1px; height: 80px;
    background: linear-gradient(180deg, transparent, var(--border-input));
}
.cta-section .section-tag { justify-content: center; }
.cta-section .section-tag::before { display: none; }
.cta-title {
    font-family: var(--serif);
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.1;
    letter-spacing: -0.02em;
    font-weight: 400;
    margin-bottom: 1.5rem;
}
.cta-title em { font-style: italic; opacity: 0.4; }
.cta-desc {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--fg-muted);
    max-width: 480px;
    margin: 0 auto 3rem;
    font-weight: 300;
}
.cta-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}
.cta-email {
    margin-top: 2.5rem;
    font-size: 0.8rem;
    color: var(--fg-muted);
    letter-spacing: 0.08em;
}
.cta-email a {
    color: var(--fg);
    text-decoration: none;
    border-bottom: 1px solid var(--border-input);
    transition: border-color 0.3s, color var(--transition-theme);
}
.cta-email a:hover { border-color: var(--fg); }

/* ---------------------------------------
   Footer
   --------------------------------------- */
footer {
    border-top: 1px solid var(--border);
    padding: 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color var(--transition-theme);
}
.footer-left {
    font-family: var(--serif);
    font-size: 1.2rem;
    cursor: default;
}
.footer-left span { font-style: normal; opacity: 0.4; cursor: default; }
.footer-right {
    font-size: 0.75rem;
    color: var(--fg-muted);
    display: flex;
    gap: 2rem;
    align-items: center;
    cursor: default;
}
.footer-right a {
    cursor: pointer;
    color: var(--fg-muted);
    text-decoration: none;
    transition: color 0.3s;
    letter-spacing: 0.05em;
}
.footer-right a:hover { color: var(--fg); }

/* ----- Divider ----- */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
    margin: 0 3rem;
    transition: background var(--transition-theme);
}

/* ---------------------------------------
   Keyframes
   --------------------------------------- */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}
@keyframes scrollPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}
@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}

/* ---------------------------------------
   Responsive
   --------------------------------------- */
@media (max-width: 1024px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .process-steps { grid-template-columns: repeat(2, 1fr); gap: 3rem; }
    .process-steps::before { display: none; }
}

@media (max-width: 768px) {
    .nav-logo{
        font-size: 1.3rem;
    }
    nav { padding: 1.2rem 1.5rem; }
    .nav-links { display: none; }
    .hamburger { display: flex; }
    nav.menu-open .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: var(--nav-bg);
        padding: 2rem 1.5rem;
        gap: 1.5rem;
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid var(--border);
    }

    section, .hero { padding: 5rem 1.5rem; }
    .hero { padding-top: 7rem; }

    .services-grid { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: 1fr; gap: 2.5rem; }
    .audience-grid { grid-template-columns: 1fr; }
    .about-layout { grid-template-columns: 1fr; gap: 3rem; }

    .hero-actions { flex-direction: column; }
    .hero-scroll { display: none; }

    .proof-bar { gap: 2.5rem; }
    .nav-right { gap: 1rem; }

    footer { flex-direction: column; gap: 1.5rem; text-align: center; }
    .footer-right { flex-wrap: wrap; justify-content: center; }

    .team-note { flex-direction: column; gap: 1rem; }
    .principal-body { grid-template-columns: 1fr; gap: 2rem; }
    .principal-header { padding: 2rem 1.5rem 0; }
    .principal-body { padding: 1.5rem; }
    .track-role { white-space: normal; }
    .divider { margin: 0 1.5rem; }

    .cta-section { padding: 6rem 1.5rem; }
}