/*
Theme Name: Nexus Digital
Theme URI: https://nexusdigital.agency
Author: Nexus Digital
Description: World-class portfolio-first dark agency theme with premium animations, real images, cinematic case studies.
Version: 2.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 8.0
License: GPLv2 or later
Text Domain: nexus
*/

/* ═══════════════════════════════════════
   DESIGN TOKENS
   ═══════════════════════════════════════ */
:root {
    --bg-deep: #050505;
    --bg-elevated: #0B0B0D;
    --bg-surface: #111114;
    --bg-card: #141418;
    --bg-hover: #1A1A1F;
    --bg-overlay: rgba(5,5,5,0.92);

    --text-primary: #F5F5F5;
    --text-secondary: #A1A1AA;
    --text-muted: #6B6B76;
    --text-inverse: #050505;

    --accent-cyan: #62EAF2;
    --accent-violet: #A78BFA;
    --accent-purple: #8B5CF6;
    --accent-mint: #7CF7C4;
    --accent-magenta: #E879F9;

    --glow-cyan: rgba(98,234,242,0.15);
    --glow-violet: rgba(167,139,250,0.15);
    --glow-purple: rgba(139,92,246,0.15);
    --glow-mint: rgba(124,247,196,0.15);
    --glow-magenta: rgba(232,121,249,0.15);

    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Marcellus', Georgia, serif;

    --size-display: clamp(3rem, 7vw, 7rem);
    --size-h1: clamp(2.5rem, 5vw, 4.5rem);
    --size-h2: clamp(2rem, 4vw, 3.2rem);
    --size-h3: clamp(1.4rem, 2.2vw, 2rem);
    --size-h4: clamp(1.1rem, 1.5vw, 1.35rem);
    --size-body: clamp(0.95rem, 1.1vw, 1.0625rem);
    --size-small: 0.875rem;
    --size-caption: 0.8125rem;
    --size-nav: 0.875rem;

    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-2xl: 10rem;
    --space-section: clamp(5rem, 10vw, 9rem);

    --container-max: 1300px;
    --container-wide: 1500px;
    --container-narrow: 860px;
    --gutter: clamp(1.25rem, 4vw, 2.5rem);

    --ease-out-expo: cubic-bezier(0.16,1,0.3,1);
    --ease-out-quart: cubic-bezier(0.25,1,0.5,1);
    --ease-in-out: cubic-bezier(0.65,0,0.35,1);
    --dur-fast: 0.3s;
    --dur-normal: 0.6s;
    --dur-slow: 1s;
    --dur-reveal: 1.2s;

    --border-subtle: 1px solid rgba(255,255,255,0.06);
    --border-accent: 1px solid rgba(98,234,242,0.25);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* ═══════════════════════════════════════
   RESET
   ═══════════════════════════════════════ */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}
body{font-family:var(--font-body);font-size:var(--size-body);line-height:1.7;color:var(--text-secondary);background:var(--bg-deep);overflow-x:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color var(--dur-fast) var(--ease-out-quart)}
button{border:none;background:none;cursor:pointer;font-family:inherit;color:inherit}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-family:var(--font-display);color:var(--text-primary);font-weight:400;line-height:1.15}
::selection{background:var(--accent-cyan);color:var(--bg-deep)}
:focus-visible{outline:2px solid var(--accent-cyan);outline-offset:4px}

/* ═══════════════════════════════════════
   LAYOUT
   ═══════════════════════════════════════ */
.nx-container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 var(--gutter)}
.nx-container--wide{max-width:var(--container-wide)}
.nx-container--narrow{max-width:var(--container-narrow)}
.nx-section{padding:var(--space-section) 0;position:relative}

/* ═══════════════════════════════════════
   SKIP LINK
   ═══════════════════════════════════════ */
.nx-skip{position:absolute;top:-100px;left:0;background:var(--accent-cyan);color:var(--bg-deep);padding:0.75rem 1.5rem;z-index:9999;font-size:var(--size-small);transition:top var(--dur-fast)}
.nx-skip:focus{top:0}

/* ═══════════════════════════════════════
   HEADER
   ═══════════════════════════════════════ */
.nx-header{position:fixed;top:0;left:0;right:0;z-index:1000;padding:1.5rem 0;transition:all var(--dur-normal) var(--ease-out-expo)}
.nx-header--scrolled{background:var(--bg-overlay);backdrop-filter:blur(24px) saturate(1.3);-webkit-backdrop-filter:blur(24px) saturate(1.3);padding:0.8rem 0;border-bottom:var(--border-subtle)}
.nx-header__inner{display:flex;align-items:center;justify-content:space-between;max-width:var(--container-wide);margin:0 auto;padding:0 var(--gutter)}

.nx-header__logo{font-family:var(--font-display);font-size:1.6rem;color:var(--text-primary);position:relative;z-index:1001}
.nx-header__logo span{color:var(--accent-cyan)}

.nx-header__nav{display:flex;align-items:center;gap:2.5rem}
.nx-header__nav-link{font-family:var(--font-body);font-size:var(--size-nav);color:var(--text-secondary);letter-spacing:0.1em;text-transform:uppercase;position:relative;padding:0.25rem 0;transition:color var(--dur-fast) var(--ease-out-quart)}
.nx-header__nav-link::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:1px;background:var(--accent-cyan);transition:width var(--dur-normal) var(--ease-out-expo)}
.nx-header__nav-link:hover{color:var(--text-primary)}
.nx-header__nav-link:hover::after{width:100%}

.nx-header__cta{font-family:var(--font-body);font-size:var(--size-nav);letter-spacing:0.12em;text-transform:uppercase;color:var(--accent-cyan);border:1px solid rgba(98,234,242,0.35);padding:0.65rem 1.6rem;border-radius:100px;position:relative;overflow:hidden;transition:all var(--dur-fast) var(--ease-out-quart)}
.nx-header__cta::before{content:'';position:absolute;inset:0;background:var(--accent-cyan);transform:scaleX(0);transform-origin:right;transition:transform var(--dur-normal) var(--ease-out-expo)}
.nx-header__cta:hover{color:var(--bg-deep);border-color:var(--accent-cyan);box-shadow:0 0 30px var(--glow-cyan)}
.nx-header__cta:hover::before{transform:scaleX(1);transform-origin:left}
.nx-header__cta span{position:relative;z-index:1}

/* Mobile Toggle */
.nx-header__toggle{display:none;flex-direction:column;gap:6px;width:30px;height:22px;justify-content:center;z-index:1001;position:relative}
.nx-header__toggle span{display:block;width:100%;height:1.5px;background:var(--text-primary);transition:all var(--dur-normal) var(--ease-out-expo);transform-origin:center}
.nx-header__toggle--active span:nth-child(1){transform:translateY(7.5px) rotate(45deg)}
.nx-header__toggle--active span:nth-child(2){opacity:0}
.nx-header__toggle--active span:nth-child(3){transform:translateY(-7.5px) rotate(-45deg)}

/* Mobile Nav */
.nx-mobile-nav{position:fixed;inset:0;z-index:999;background:var(--bg-deep);display:flex;flex-direction:column;justify-content:center;align-items:center;gap:0.5rem;opacity:0;visibility:hidden;transition:all var(--dur-normal) var(--ease-out-expo)}
.nx-mobile-nav--open{opacity:1;visibility:visible}
.nx-mobile-nav__link{font-family:var(--font-display);font-size:clamp(2rem,6vw,3.5rem);color:var(--text-primary);display:block;padding:0.4rem 0;opacity:0;transform:translateY(30px);transition:all var(--dur-normal) var(--ease-out-expo)}
.nx-mobile-nav--open .nx-mobile-nav__link{opacity:1;transform:translateY(0)}
.nx-mobile-nav--open .nx-mobile-nav__link:nth-child(1){transition-delay:.1s}
.nx-mobile-nav--open .nx-mobile-nav__link:nth-child(2){transition-delay:.15s}
.nx-mobile-nav--open .nx-mobile-nav__link:nth-child(3){transition-delay:.2s}
.nx-mobile-nav--open .nx-mobile-nav__link:nth-child(4){transition-delay:.25s}
.nx-mobile-nav--open .nx-mobile-nav__link:nth-child(5){transition-delay:.3s}
.nx-mobile-nav--open .nx-mobile-nav__link:nth-child(6){transition-delay:.35s}
.nx-mobile-nav__link:hover{color:var(--accent-cyan)}
.nx-mobile-nav__portfolio{color:var(--accent-cyan) !important}

@media(max-width:968px){
    .nx-header__nav,.nx-header__cta{display:none}
    .nx-header__toggle{display:flex}
}

/* ═══════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════ */
.nx-btn{display:inline-flex;align-items:center;gap:0.75rem;font-family:var(--font-body);font-size:var(--size-nav);letter-spacing:0.1em;text-transform:uppercase;padding:1rem 2.2rem;border-radius:100px;position:relative;overflow:hidden;transition:all var(--dur-normal) var(--ease-out-expo)}
.nx-btn--primary{background:var(--accent-cyan);color:var(--bg-deep);font-weight:500}
.nx-btn--primary:hover{box-shadow:0 0 50px var(--glow-cyan),0 0 100px rgba(98,234,242,0.06);transform:translateY(-2px)}
.nx-btn--outline{border:1px solid rgba(255,255,255,0.15);color:var(--text-primary)}
.nx-btn--outline:hover{border-color:var(--accent-cyan);color:var(--accent-cyan);box-shadow:0 0 30px var(--glow-cyan)}
.nx-btn__arrow{transition:transform var(--dur-fast) var(--ease-out-expo)}
.nx-btn:hover .nx-btn__arrow{transform:translateX(4px)}

/* ═══════════════════════════════════════
   SECTION LABEL
   ═══════════════════════════════════════ */
.nx-label{font-family:var(--font-body);font-size:var(--size-caption);letter-spacing:0.2em;text-transform:uppercase;color:var(--accent-cyan);display:inline-flex;align-items:center;gap:0.6rem;margin-bottom:var(--space-md)}
.nx-label::before{content:'';width:24px;height:1px;background:var(--accent-cyan)}

/* ═══════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════ */

/* Fade Up */
.nx-anim{opacity:0;transform:translateY(50px);transition:opacity var(--dur-reveal) var(--ease-out-expo),transform var(--dur-reveal) var(--ease-out-expo)}
.nx-anim--visible{opacity:1;transform:translateY(0)}
.nx-anim--d1{transition-delay:.1s}
.nx-anim--d2{transition-delay:.2s}
.nx-anim--d3{transition-delay:.3s}
.nx-anim--d4{transition-delay:.4s}
.nx-anim--d5{transition-delay:.5s}
.nx-anim--d6{transition-delay:.6s}
.nx-anim--d7{transition-delay:.7s}
.nx-anim--d8{transition-delay:.8s}

/* Scale Up */
.nx-anim-scale{opacity:0;transform:scale(0.92);transition:opacity var(--dur-reveal) var(--ease-out-expo),transform var(--dur-reveal) var(--ease-out-expo)}
.nx-anim-scale--visible{opacity:1;transform:scale(1)}

/* Mask Reveal (clip-path from bottom) */
.nx-anim-mask{clip-path:inset(100% 0 0 0);transition:clip-path var(--dur-reveal) var(--ease-out-expo)}
.nx-anim-mask--visible{clip-path:inset(0 0 0 0)}

/* Line Grow */
.nx-anim-line{width:0;transition:width var(--dur-slow) var(--ease-out-expo)}
.nx-anim-line--visible{width:100%}

/* Slide In Left */
.nx-anim-left{opacity:0;transform:translateX(-60px);transition:all var(--dur-reveal) var(--ease-out-expo)}
.nx-anim-left--visible{opacity:1;transform:translateX(0)}

/* Slide In Right */
.nx-anim-right{opacity:0;transform:translateX(60px);transition:all var(--dur-reveal) var(--ease-out-expo)}
.nx-anim-right--visible{opacity:1;transform:translateX(0)}

/* Blur In */
.nx-anim-blur{opacity:0;filter:blur(20px);transform:translateY(30px);transition:all var(--dur-reveal) var(--ease-out-expo)}
.nx-anim-blur--visible{opacity:1;filter:blur(0);transform:translateY(0)}

/* Stagger children */
.nx-stagger > *{opacity:0;transform:translateY(30px);transition:all var(--dur-reveal) var(--ease-out-expo)}
.nx-stagger--visible > *{opacity:1;transform:translateY(0)}
.nx-stagger--visible > *:nth-child(1){transition-delay:.05s}
.nx-stagger--visible > *:nth-child(2){transition-delay:.1s}
.nx-stagger--visible > *:nth-child(3){transition-delay:.15s}
.nx-stagger--visible > *:nth-child(4){transition-delay:.2s}
.nx-stagger--visible > *:nth-child(5){transition-delay:.25s}
.nx-stagger--visible > *:nth-child(6){transition-delay:.3s}
.nx-stagger--visible > *:nth-child(7){transition-delay:.35s}
.nx-stagger--visible > *:nth-child(8){transition-delay:.4s}

/* Counter Animation */
@keyframes nx-count-up{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}

/* Glow Float */
@keyframes nx-glow-drift{
    0%,100%{transform:translate(0,0) scale(1)}
    25%{transform:translate(40px,-30px) scale(1.08)}
    50%{transform:translate(-20px,20px) scale(0.95)}
    75%{transform:translate(30px,10px) scale(1.03)}
}

/* Dot Pulse */
@keyframes nx-pulse{
    0%,100%{opacity:1;box-shadow:0 0 12px var(--glow-cyan)}
    50%{opacity:0.4;box-shadow:0 0 28px var(--accent-cyan)}
}

/* Scroll Line */
@keyframes nx-scroll-line{
    0%{transform:scaleY(0);transform-origin:top;opacity:0}
    50%{transform:scaleY(1);transform-origin:top;opacity:1}
    100%{transform:scaleY(0);transform-origin:bottom;opacity:0}
}

/* Shimmer for cards */
@keyframes nx-shimmer{
    0%{background-position:-200% 0}
    100%{background-position:200% 0}
}

/* Reduced Motion */
@media(prefers-reduced-motion:reduce){
    *,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}
    .nx-anim,.nx-anim-scale,.nx-anim-mask,.nx-anim-left,.nx-anim-right,.nx-anim-blur{opacity:1;transform:none;clip-path:none;filter:none}
    .nx-anim-line{width:100%}
    .nx-stagger > *{opacity:1;transform:none}
}

/* ═══════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════ */
.nx-footer{background:var(--bg-elevated);border-top:var(--border-subtle);position:relative;overflow:hidden}

.nx-footer__cta-section{padding:var(--space-section) 0;text-align:center;border-bottom:var(--border-subtle)}
.nx-footer__cta-label{font-family:var(--font-body);font-size:var(--size-small);letter-spacing:0.2em;text-transform:uppercase;color:var(--accent-cyan);margin-bottom:var(--space-md);display:block}
.nx-footer__cta-title{font-size:var(--size-h1);color:var(--text-primary);margin-bottom:var(--space-lg);max-width:700px;margin-left:auto;margin-right:auto}
.nx-footer__cta-title em{font-style:italic;color:var(--accent-violet)}

.nx-footer__bottom{padding:var(--space-lg) 0}
.nx-footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--space-lg)}
.nx-footer__brand{font-family:var(--font-display);font-size:1.5rem;color:var(--text-primary);margin-bottom:var(--space-sm)}
.nx-footer__brand span{color:var(--accent-cyan)}
.nx-footer__brand-desc{color:var(--text-muted);font-size:var(--size-small);max-width:300px;line-height:1.8}
.nx-footer__col-title{font-size:var(--size-caption);letter-spacing:0.15em;text-transform:uppercase;color:var(--text-muted);margin-bottom:var(--space-md)}
.nx-footer__link{display:block;color:var(--text-secondary);font-size:var(--size-small);padding:0.3rem 0;transition:color var(--dur-fast)}
.nx-footer__link:hover{color:var(--accent-cyan)}
.nx-footer__copyright{text-align:center;padding:var(--space-md) 0;border-top:var(--border-subtle);color:var(--text-muted);font-size:var(--size-caption)}
.nx-footer__glow{position:absolute;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,var(--glow-cyan),transparent 70%);bottom:-250px;left:50%;transform:translateX(-50%);pointer-events:none;opacity:0.3}

@media(max-width:768px){
    .nx-footer__grid{grid-template-columns:1fr 1fr;gap:var(--space-md)}
}
@media(max-width:480px){
    .nx-footer__grid{grid-template-columns:1fr}
}