/* ============================================================
   TNT STUDIO — DREIRAUM-INSPIRED DESIGN SYSTEM
   Dark immersive luxury tech aesthetic
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --dr-black: #04040b;
    --dr-black-soft: #06060f;
    --dr-dark-1: #0a0a14;
    --dr-dark-2: #12121e;
    --dr-dark-3: #1a1a2e;
    --dr-dark-4: #22223a;
    --dr-white: #ffffff;
    --dr-white-soft: #f0f0f0;
    --dr-gray-100: #e5e5e5;
    --dr-gray-200: #cccccc;
    --dr-gray-300: #999999;
    --dr-gray-400: #666666;
    --dr-gray-500: #444444;
    --dr-accent: #ff6b1a;
    --dr-accent-dim: #ffa94d;
    --dr-accent-glow: rgba(255, 107, 26, 0.15);
    --dr-accent-glow-strong: rgba(255, 107, 26, 0.3);
    --dr-blue: #4da6ff;
    --dr-teal: #7fd1cb;
    --dr-purple: #8a63f0;
    --dr-font-display: 'Space Grotesk', sans-serif;
    --dr-font-body: 'Inter', sans-serif;
    --dr-font-mono: 'JetBrains Mono', monospace;
    --dr-text-xs: clamp(0.7rem, 0.8vw, 0.75rem);
    --dr-text-sm: clamp(0.8rem, 1vw, 0.875rem);
    --dr-text-base: clamp(0.9rem, 1.2vw, 1rem);
    --dr-text-lg: clamp(1rem, 1.5vw, 1.125rem);
    --dr-text-xl: clamp(1.15rem, 2vw, 1.25rem);
    --dr-text-2xl: clamp(1.4rem, 2.5vw, 1.75rem);
    --dr-text-3xl: clamp(1.8rem, 3.5vw, 2.5rem);
    --dr-text-4xl: clamp(2.2rem, 5vw, 3.5rem);
    --dr-text-5xl: clamp(2.8rem, 6.5vw, 5rem);
    --dr-text-hero: clamp(3.5rem, 9vw, 7rem);
    --dr-sp-1: 0.25rem;
    --dr-sp-2: 0.5rem;
    --dr-sp-3: 0.75rem;
    --dr-sp-4: 1rem;
    --dr-sp-5: 1.25rem;
    --dr-sp-6: 1.5rem;
    --dr-sp-8: 2rem;
    --dr-sp-10: 2.5rem;
    --dr-sp-12: 3rem;
    --dr-sp-16: 4rem;
    --dr-sp-20: 5rem;
    --dr-sp-24: 6rem;
    --dr-sp-32: 8rem;
    --dr-sp-40: 10rem;
    --dr-sp-48: 12rem;
    --dr-max-width: 1400px;
    --dr-content-width: 1200px;
    --dr-narrow-width: 800px;
    --dr-radius-sm: 6px;
    --dr-radius-md: 12px;
    --dr-radius-lg: 20px;
    --dr-radius-xl: 32px;
    --dr-radius-full: 9999px;
    --dr-ease: cubic-bezier(0.16, 1, 0.3, 1);
    --dr-ease-out: cubic-bezier(0.33, 1, 0.68, 1);
    --dr-duration-fast: 0.2s;
    --dr-duration: 0.4s;
    --dr-duration-slow: 0.8s;
    --dr-glass-bg: rgba(17, 17, 17, 0.6);
    --dr-glass-border: rgba(255, 255, 255, 0.06);
    --dr-glass-border-hover: rgba(255, 107, 26, 0.25);
    --dr-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --dr-shadow-md: 0 8px 32px rgba(0, 0, 0, 0.5);
    --dr-shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.7);
    --dr-shadow-glow: 0 0 40px rgba(255, 107, 26, 0.1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.dr-body {
    background: var(--dr-black);
    color: var(--dr-white);
    font-family: var(--dr-font-body);
    font-size: var(--dr-text-base);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; color: inherit; }
ul, ol { list-style: none; }

.dr-container { max-width: var(--dr-max-width); margin: 0 auto; padding: 0 var(--dr-sp-8); }
.dr-container--narrow { max-width: var(--dr-narrow-width); }
.dr-container--content { max-width: var(--dr-content-width); }

/* ── Navigation ── */
.dr-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: var(--dr-sp-6) var(--dr-sp-8);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background var(--dr-duration) var(--dr-ease), padding var(--dr-duration) var(--dr-ease);
}

.dr-nav.scrolled {
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--dr-sp-4) var(--dr-sp-8);
    border-bottom: 1px solid var(--dr-glass-border);
}

.dr-nav__logo { display: flex; align-items: center; gap: var(--dr-sp-3); }
.dr-nav__logo img { height: 36px; transition: transform var(--dr-duration) var(--dr-ease); filter: drop-shadow(0 0 8px rgba(255,107,26,.5)) drop-shadow(0 0 16px rgba(255,107,26,.2)); }
.dr-nav__logo:hover img { transform: scale(1.05); }
.dr-nav__logo-text { font-family: var(--dr-font-display); font-weight: 900; font-size: var(--dr-text-lg); letter-spacing: 0.08em; text-shadow: 0 0 12px rgba(255,107,26,.3); }

.dr-nav__links { display: flex; align-items: center; gap: var(--dr-sp-10); }

.dr-nav__link {
    font-family: var(--dr-font-body);
    font-size: var(--dr-text-sm);
    font-weight: 500;
    color: var(--dr-gray-200);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    transition: color var(--dr-duration-fast);
    position: relative;
}

.dr-nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0; height: 1px;
    background: var(--dr-accent);
    transition: width var(--dr-duration) var(--dr-ease);
}

.dr-nav__link:hover { color: var(--dr-white); }
.dr-nav__link:hover::after { width: 100%; }

.dr-nav__cta {
    font-family: var(--dr-font-display);
    font-size: var(--dr-text-sm);
    font-weight: 600;
    padding: var(--dr-sp-3) var(--dr-sp-6);
    background: var(--dr-accent);
    color: var(--dr-black);
    border-radius: var(--dr-radius-full);
    transition: transform var(--dr-duration-fast), box-shadow var(--dr-duration-fast);
}

.dr-nav__cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 107, 26, 0.3);
}

.dr-nav__toggle { display: none; flex-direction: column; gap: 5px; padding: var(--dr-sp-2); z-index: 1001; }
.dr-nav__toggle span { display: block; width: 24px; height: 2px; background: var(--dr-white); transition: transform var(--dr-duration) var(--dr-ease), opacity var(--dr-duration-fast); }
.dr-nav__toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.dr-nav__toggle.active span:nth-child(2) { opacity: 0; }
.dr-nav__toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 768px) {
    .dr-nav__toggle { display: flex; }
    .dr-nav__links {
        position: fixed; inset: 0;
        background: var(--dr-black);
        flex-direction: column;
        justify-content: center;
        gap: var(--dr-sp-10);
        opacity: 0; visibility: hidden;
        transition: opacity var(--dr-duration) var(--dr-ease), visibility var(--dr-duration);
    }
    .dr-nav__links.open { opacity: 1; visibility: visible; }
    .dr-nav__link { font-size: var(--dr-text-2xl); }
}

/* ── Hero ── */
.dr-hero {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
    padding: var(--dr-sp-32) var(--dr-sp-8);
}

.dr-hero__bg { position: absolute; inset: 0; z-index: 0; }
.dr-hero__bg video, .dr-hero__bg img { width: 100%; height: 100%; object-fit: cover; opacity: 0.4; }

.dr-hero__overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.3) 40%, rgba(0,0,0,0.7) 80%, var(--dr-black) 100%);
    z-index: 1;
}

.dr-hero__content { position: relative; z-index: 2; text-align: center; max-width: 1000px; }

.dr-hero__eyebrow {
    font-family: var(--dr-font-mono);
    font-size: var(--dr-text-xs);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--dr-accent);
    margin-bottom: var(--dr-sp-6);
    opacity: 0; animation: drFadeUp 0.8s var(--dr-ease) 0.2s forwards;
}

.dr-hero__title {
    font-family: var(--dr-font-display);
    font-size: var(--dr-text-hero);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: var(--dr-sp-8);
    opacity: 0; animation: drFadeUp 0.8s var(--dr-ease) 0.4s forwards;
}

.dr-hero__title span { color: var(--dr-accent); }

.dr-hero__subtitle {
    font-size: var(--dr-text-xl);
    color: var(--dr-gray-200);
    max-width: 600px;
    margin: 0 auto var(--dr-sp-10);
    line-height: 1.7;
    opacity: 0; animation: drFadeUp 0.8s var(--dr-ease) 0.6s forwards;
}

.dr-hero__actions {
    display: flex; align-items: center; justify-content: center;
    gap: var(--dr-sp-6); flex-wrap: wrap;
    opacity: 0; animation: drFadeUp 0.8s var(--dr-ease) 0.8s forwards;
}

.dr-hero__scroll {
    position: absolute; bottom: var(--dr-sp-10); left: 50%;
    transform: translateX(-50%); z-index: 2;
    display: flex; flex-direction: column; align-items: center; gap: var(--dr-sp-3);
    opacity: 0; animation: drFadeUp 0.8s var(--dr-ease) 1.2s forwards;
}

.dr-hero__scroll-line {
    width: 1px; height: 48px;
    background: linear-gradient(to bottom, var(--dr-accent), transparent);
    animation: drScrollPulse 2s ease-in-out infinite;
}

.dr-hero__scroll-text {
    font-family: var(--dr-font-mono);
    font-size: var(--dr-text-xs);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--dr-gray-400);
}

/* ── Buttons ── */
.dr-btn {
    display: inline-flex; align-items: center; gap: var(--dr-sp-3);
    font-family: var(--dr-font-display);
    font-weight: 600; font-size: var(--dr-text-sm);
    padding: var(--dr-sp-4) var(--dr-sp-8);
    border-radius: var(--dr-radius-full);
    transition: all var(--dr-duration-fast) var(--dr-ease);
    letter-spacing: 0.02em; white-space: nowrap;
}

.dr-btn--primary { background: var(--dr-accent); color: var(--dr-black); }
.dr-btn--primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(255, 107, 26, 0.3); }

.dr-btn--secondary { background: transparent; color: var(--dr-white); border: 1px solid var(--dr-gray-500); }
.dr-btn--secondary:hover { border-color: var(--dr-white); transform: translateY(-2px); }

.dr-btn--ghost { background: transparent; color: var(--dr-accent); padding: var(--dr-sp-2) 0; }
.dr-btn--ghost:hover { opacity: 0.7; }

.dr-btn--lg { padding: var(--dr-sp-5) var(--dr-sp-10); font-size: var(--dr-text-base); }

/* ── Sections ── */
.dr-section { padding: var(--dr-sp-32) var(--dr-sp-8); position: relative; }
.dr-section--sm { padding: var(--dr-sp-20) var(--dr-sp-8); }

.dr-section__header { text-align: center; max-width: 700px; margin: 0 auto var(--dr-sp-16); }

.dr-section__eyebrow {
    font-family: var(--dr-font-mono);
    font-size: var(--dr-text-xs);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--dr-accent);
    margin-bottom: var(--dr-sp-4);
}

.dr-section__title {
    font-family: var(--dr-font-display);
    font-size: var(--dr-text-4xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    margin-bottom: var(--dr-sp-6);
}

.dr-section__desc { font-size: var(--dr-text-lg); color: var(--dr-gray-300); line-height: 1.7; }

/* ── Cards ── */
.dr-card {
    background: var(--dr-glass-bg);
    border: 1px solid var(--dr-glass-border);
    border-radius: var(--dr-radius-lg);
    padding: var(--dr-sp-10);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: transform var(--dr-duration) var(--dr-ease), border-color var(--dr-duration) var(--dr-ease), box-shadow var(--dr-duration) var(--dr-ease);
}

.dr-card:hover { transform: translateY(-4px); border-color: var(--dr-glass-border-hover); box-shadow: var(--dr-shadow-glow); }

.dr-card__icon {
    width: 48px; height: 48px;
    display: flex; align-items: center; justify-content: center;
    background: var(--dr-accent-glow);
    border-radius: var(--dr-radius-md);
    margin-bottom: var(--dr-sp-6);
    color: var(--dr-accent); font-size: 1.25rem;
}

.dr-card__title { font-family: var(--dr-font-display); font-size: var(--dr-text-xl); font-weight: 600; margin-bottom: var(--dr-sp-4); letter-spacing: -0.01em; }
.dr-card__text { color: var(--dr-gray-300); font-size: var(--dr-text-base); line-height: 1.7; }

/* ── Grid ── */
.dr-grid { display: grid; gap: var(--dr-sp-8); }
.dr-grid--2 { grid-template-columns: repeat(2, 1fr); }
.dr-grid--3 { grid-template-columns: repeat(3, 1fr); }
.dr-grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .dr-grid--4 { grid-template-columns: repeat(2, 1fr); }
    .dr-grid--3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .dr-grid--4, .dr-grid--3, .dr-grid--2 { grid-template-columns: 1fr; }
}

/* ── Stats ── */
.dr-stats {
    display: flex; justify-content: center; gap: var(--dr-sp-16); flex-wrap: wrap;
    padding: var(--dr-sp-12) 0;
    border-top: 1px solid var(--dr-glass-border);
    border-bottom: 1px solid var(--dr-glass-border);
}

.dr-stat { text-align: center; }
.dr-stat__number { font-family: var(--dr-font-display); font-size: var(--dr-text-4xl); font-weight: 700; color: var(--dr-accent); line-height: 1; margin-bottom: var(--dr-sp-2); }
.dr-stat__label { font-family: var(--dr-font-mono); font-size: var(--dr-text-xs); text-transform: uppercase; letter-spacing: 0.15em; color: var(--dr-gray-400); }

/* ── Steps ── */
.dr-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--dr-sp-8); counter-reset: step; }
.dr-step { position: relative; padding: var(--dr-sp-10); counter-increment: step; }
.dr-step::before { content: counter(step, decimal-leading-zero); font-family: var(--dr-font-display); font-size: var(--dr-text-5xl); font-weight: 700; color: var(--dr-dark-3); line-height: 1; margin-bottom: var(--dr-sp-6); display: block; }
.dr-step__title { font-family: var(--dr-font-display); font-size: var(--dr-text-2xl); font-weight: 600; margin-bottom: var(--dr-sp-4); }
.dr-step__text { color: var(--dr-gray-300); line-height: 1.7; }

@media (max-width: 768px) { .dr-steps { grid-template-columns: 1fr; } }

/* ── Footer ── */
.dr-footer { padding: var(--dr-sp-20) var(--dr-sp-8) var(--dr-sp-10); border-top: 1px solid var(--dr-glass-border); }
.dr-footer__inner { max-width: var(--dr-max-width); margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--dr-sp-12); margin-bottom: var(--dr-sp-16); }
.dr-footer__brand { max-width: 300px; }
.dr-footer__brand-logo { display: flex; align-items: center; gap: var(--dr-sp-3); margin-bottom: var(--dr-sp-6); }
.dr-footer__brand-logo img { height: 32px; }
.dr-footer__brand-text { color: var(--dr-gray-400); font-size: var(--dr-text-sm); line-height: 1.7; }
.dr-footer__col-title { font-family: var(--dr-font-display); font-size: var(--dr-text-sm); font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: var(--dr-sp-6); color: var(--dr-white); }
.dr-footer__links { display: flex; flex-direction: column; gap: var(--dr-sp-3); }
.dr-footer__link { color: var(--dr-gray-400); font-size: var(--dr-text-sm); transition: color var(--dr-duration-fast); }
.dr-footer__link:hover { color: var(--dr-accent); }
.dr-footer__bottom { max-width: var(--dr-max-width); margin: 0 auto; padding-top: var(--dr-sp-8); border-top: 1px solid var(--dr-glass-border); display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: var(--dr-sp-4); }
.dr-footer__copy { font-size: var(--dr-text-xs); color: var(--dr-gray-500); }
.dr-footer__socials { display: flex; gap: var(--dr-sp-4); }
.dr-footer__social { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; border-radius: var(--dr-radius-full); border: 1px solid var(--dr-glass-border); color: var(--dr-gray-400); font-size: 0.9rem; transition: all var(--dr-duration-fast); }
.dr-footer__social:hover { border-color: var(--dr-accent); color: var(--dr-accent); transform: translateY(-2px); }

@media (max-width: 768px) {
    .dr-footer__inner { grid-template-columns: 1fr 1fr; gap: var(--dr-sp-8); }
    .dr-footer__brand { grid-column: 1 / -1; }
    .dr-footer__bottom { flex-direction: column; text-align: center; }
}

/* ── Forms ── */
.dr-form-group { margin-bottom: var(--dr-sp-6); }
.dr-label { display: block; font-family: var(--dr-font-mono); font-size: var(--dr-text-xs); text-transform: uppercase; letter-spacing: 0.1em; color: var(--dr-gray-300); margin-bottom: var(--dr-sp-3); }
.dr-input {
    width: 100%; padding: var(--dr-sp-4) var(--dr-sp-5);
    background: var(--dr-dark-1); border: 1px solid var(--dr-dark-4);
    border-radius: var(--dr-radius-md); color: var(--dr-white);
    font-family: var(--dr-font-body); font-size: var(--dr-text-base);
    transition: border-color var(--dr-duration-fast), box-shadow var(--dr-duration-fast);
    outline: none;
}
.dr-input:focus { border-color: var(--dr-accent); box-shadow: 0 0 0 3px var(--dr-accent-glow); }
.dr-input::placeholder { color: var(--dr-gray-500); }
.dr-textarea { resize: vertical; min-height: 140px; }

/* ── HUD ── */
.dr-hud { position: fixed; bottom: var(--dr-sp-6); left: var(--dr-sp-6); font-family: var(--dr-font-mono); font-size: var(--dr-text-xs); color: var(--dr-gray-500); letter-spacing: 0.05em; z-index: 100; pointer-events: none; }
@media (max-width: 768px) { .dr-hud { display: none; } }

/* ── Misc ── */
.dr-divider { width: 100%; height: 1px; background: var(--dr-glass-border); border: none; }
.dr-badge { display: inline-flex; align-items: center; gap: var(--dr-sp-2); font-family: var(--dr-font-mono); font-size: var(--dr-text-xs); text-transform: uppercase; letter-spacing: 0.1em; padding: var(--dr-sp-2) var(--dr-sp-4); border-radius: var(--dr-radius-full); background: var(--dr-accent-glow); color: var(--dr-accent); border: 1px solid rgba(255, 107, 26, 0.2); }

/* ── Animations ── */
@keyframes drFadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes drFadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes drScrollPulse { 0%, 100% { opacity: 1; transform: scaleY(1); } 50% { opacity: 0.5; transform: scaleY(0.8); } }
@keyframes drFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes drGlow { 0%, 100% { opacity: 0.5; } 50% { opacity: 1; } }

.dr-reveal { opacity: 0; transform: translateY(40px); transition: opacity var(--dr-duration-slow) var(--dr-ease), transform var(--dr-duration-slow) var(--dr-ease); }
.dr-reveal.visible { opacity: 1; transform: translateY(0); }
.dr-reveal--delay-1 { transition-delay: 0.1s; }
.dr-reveal--delay-2 { transition-delay: 0.2s; }
.dr-reveal--delay-3 { transition-delay: 0.3s; }
.dr-reveal--delay-4 { transition-delay: 0.4s; }
.dr-reveal--delay-5 { transition-delay: 0.5s; }
.dr-reveal--delay-6 { transition-delay: 0.6s; }

.dr-text-center { text-align: center; }
.dr-text-accent { color: var(--dr-accent); }
.dr-text-muted { color: var(--dr-gray-400); }