/* ==========================================================================
   FOLIOFRAME — Creative Portfolio Design System
   ========================================================================== */

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

/* ==========================================================================
   Custom Properties
   ========================================================================== */

:root {
  /* Colors */
  --c-navy:        #0A0E17;
  --c-charcoal:    #151A23;
  --c-gold:        #D4A853;
  --c-gold-dim:    #b8923f;
  --c-gold-glow:   rgba(212, 168, 83, 0.15);
  --c-white:       #F8FAFC;
  --c-gray-100:    #E2E8F0;
  --c-gray-200:    #CBD5E1;
  --c-gray-300:    #94A3B8;
  --c-gray-400:    #64748B;
  --c-gray-500:    #475569;
  --c-overlay:     rgba(10, 14, 23, 0.85);
  --c-overlay-light: rgba(10, 14, 23, 0.55);
  --c-border:      rgba(212, 168, 83, 0.2);
  --c-border-solid:#1e2530;

  /* Typography */
  --ff-display:    'Space Mono', monospace;
  --ff-body:       'DM Sans', sans-serif;
  --fs-xs:         0.75rem;
  --fs-sm:         0.875rem;
  --fs-base:       1rem;
  --fs-md:         1.125rem;
  --fs-lg:         1.25rem;
  --fs-xl:         1.5rem;
  --fs-2xl:        2rem;
  --fs-3xl:        2.5rem;
  --fs-4xl:        3.5rem;
  --fs-hero:       clamp(2.5rem, 6vw, 5rem);
  --lh-tight:      1.15;
  --lh-snug:       1.35;
  --lh-normal:     1.6;
  --fw-regular:    400;
  --fw-medium:     500;
  --fw-bold:       700;
  --ls-wide:       0.12em;
  --ls-wider:      0.2em;

  /* Spacing */
  --sp-xs:         0.25rem;
  --sp-sm:         0.5rem;
  --sp-md:         1rem;
  --sp-lg:         1.5rem;
  --sp-xl:         2rem;
  --sp-2xl:        3rem;
  --sp-3xl:        4rem;
  --sp-4xl:        6rem;
  --sp-section:    clamp(4rem, 8vw, 8rem);

  /* Layout */
  --max-w:         1200px;
  --max-w-narrow:  900px;
  --gap:           1.5rem;
  --radius:        6px;
  --radius-lg:     12px;

  /* Transitions */
  --ease:          cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast:      0.15s;
  --dur-normal:    0.3s;
  --dur-slow:      0.5s;

  /* Shadows */
  --shadow-card:   0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-glow:   0 0 30px rgba(212, 168, 83, 0.08);
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

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

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

body {
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--c-gray-200);
  background: var(--c-navy);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--c-gold);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease);
}

a:hover {
  color: var(--c-gold-dim);
}

ul,
ol {
  list-style: none;
}

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

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

::selection {
  background: var(--c-gold);
  color: var(--c-navy);
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--ff-display);
  font-weight: var(--fw-bold);
  color: var(--c-white);
  line-height: var(--lh-tight);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
}

h1 { font-size: var(--fs-4xl); }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }

.section-title {
  font-size: var(--fs-3xl);
  margin-bottom: var(--sp-md);
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--c-gold);
}

.section-subtitle {
  font-family: var(--ff-body);
  color: var(--c-gray-300);
  font-size: var(--fs-md);
  max-width: 560px;
  text-transform: none;
  letter-spacing: normal;
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
}

p {
  margin-bottom: var(--sp-md);
}

.text-gold { color: var(--c-gold); }
.text-white { color: var(--c-white); }
.text-muted { color: var(--c-gray-400); }
.text-center { text-align: center; }

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-xl);
}

.container--narrow {
  max-width: var(--max-w-narrow);
}

section {
  padding: var(--sp-section) 0;
}

.section-dark {
  background: var(--c-charcoal);
}

.section-darker {
  background: var(--c-navy);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  font-family: var(--ff-display);
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  padding: 0.85rem 2rem;
  border-radius: var(--radius);
  transition: all var(--dur-normal) var(--ease);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--c-gold);
  color: var(--c-navy);
}

.btn--primary:hover {
  background: var(--c-gold-dim);
  color: var(--c-navy);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 168, 83, 0.3);
}

.btn--outline {
  border: 2px solid var(--c-gold);
  color: var(--c-gold);
  background: transparent;
}

.btn--outline:hover {
  background: var(--c-gold);
  color: var(--c-navy);
  transform: translateY(-2px);
}

.btn--sm {
  font-size: var(--fs-xs);
  padding: 0.6rem 1.4rem;
}

.btn--lg {
  font-size: var(--fs-base);
  padding: 1rem 2.5rem;
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 23, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-border);
  transition: background var(--dur-normal) var(--ease);
}

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

.header__brand {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--c-white);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
}

.header__brand span {
  color: var(--c-gold);
}

.header__nav {
  display: flex;
  align-items: center;
  gap: var(--sp-2xl);
}

.header__links {
  display: flex;
  align-items: center;
  gap: var(--sp-xl);
}

.header__links a {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  color: var(--c-gray-300);
  position: relative;
  padding: 4px 0;
}

.header__links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--c-gold);
  transition: width var(--dur-normal) var(--ease);
}

.header__links a:hover,
.header__links a.active {
  color: var(--c-gold);
}

.header__links a:hover::after,
.header__links a.active::after {
  width: 100%;
}

.header__cta {
  margin-left: var(--sp-md);
}

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  z-index: 1001;
}

.burger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--c-white);
  border-radius: 2px;
  transition: all var(--dur-normal) var(--ease);
  transform-origin: center;
}

.burger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.burger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.burger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================================================
   Mobile Nav Overlay
   ========================================================================== */

.mobile-nav {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 999;
  background: var(--c-overlay);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-xl);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-normal) var(--ease),
              visibility var(--dur-normal) var(--ease);
}

.mobile-nav.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav a {
  font-family: var(--ff-display);
  font-size: var(--fs-2xl);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  color: var(--c-white);
  transition: color var(--dur-fast) var(--ease);
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--c-gold);
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 72px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(212, 168, 83, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: var(--sp-2xl);
}

.hero__label {
  font-family: var(--ff-display);
  font-size: var(--fs-sm);
  color: var(--c-gold);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  margin-bottom: var(--sp-lg);
  display: block;
}

.hero__title {
  font-size: var(--fs-hero);
  color: var(--c-white);
  margin-bottom: var(--sp-lg);
  line-height: var(--lh-tight);
}

.hero__title span {
  color: var(--c-gold);
}

.hero__subtitle {
  font-family: var(--ff-body);
  font-size: var(--fs-lg);
  color: var(--c-gray-300);
  max-width: 540px;
  margin: 0 auto var(--sp-2xl);
  line-height: var(--lh-normal);
  text-transform: none;
  letter-spacing: normal;
  font-weight: var(--fw-regular);
}

.hero__actions {
  display: flex;
  gap: var(--sp-md);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--c-gray-400);
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-sm);
}

.hero__scroll::after {
  content: '';
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--c-gold), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: scaleY(0.7); }
  50% { opacity: 1; transform: scaleY(1); }
}

/* Page Hero (inner pages) */
.hero--page {
  min-height: 50vh;
  background-size: cover;
  background-position: center;
  position: relative;
}

.hero--page::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10, 14, 23, 0.7), rgba(10, 14, 23, 0.95));
}

.hero--page .hero__content {
  text-align: left;
  align-items: flex-start;
}

/* ==========================================================================
   Portfolio Grid
   ========================================================================== */

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.portfolio-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--c-charcoal);
  border: 1px solid var(--c-border);
  transition: transform var(--dur-normal) var(--ease),
              box-shadow var(--dur-normal) var(--ease);
}

.portfolio-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.portfolio-item__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}

.portfolio-item:hover .portfolio-item__img {
  transform: scale(1.05);
}

.portfolio-item__overlay {
  position: absolute;
  inset: 0;
  background: var(--c-overlay);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--dur-normal) var(--ease);
  padding: var(--sp-xl);
  text-align: center;
}

.portfolio-item:hover .portfolio-item__overlay {
  opacity: 1;
}

.portfolio-item__category {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  color: var(--c-gold);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  margin-bottom: var(--sp-sm);
}

.portfolio-item__title {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  color: var(--c-white);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  margin-bottom: var(--sp-md);
}

.portfolio-item__link {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  color: var(--c-gold);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  border-bottom: 1px solid var(--c-gold);
  padding-bottom: 2px;
  transition: opacity var(--dur-fast) var(--ease);
}

.portfolio-item__link:hover {
  opacity: 0.7;
}

/* ==========================================================================
   Filter Tabs
   ========================================================================== */

.filter-tabs {
  display: flex;
  gap: var(--sp-sm);
  flex-wrap: wrap;
  margin-bottom: var(--sp-2xl);
  justify-content: center;
}

.filter-tab {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--c-border-solid);
  border-radius: var(--radius);
  color: var(--c-gray-400);
  background: transparent;
  cursor: pointer;
  transition: all var(--dur-normal) var(--ease);
}

.filter-tab:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
}

.filter-tab.active {
  background: var(--c-gold);
  color: var(--c-navy);
  border-color: var(--c-gold);
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background: var(--c-charcoal);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-2xl);
  transition: transform var(--dur-normal) var(--ease),
              box-shadow var(--dur-normal) var(--ease),
              border-color var(--dur-normal) var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
  border-color: rgba(212, 168, 83, 0.35);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-gold-glow);
  border-radius: var(--radius);
  color: var(--c-gold);
  font-size: var(--fs-xl);
  margin-bottom: var(--sp-lg);
}

.card__title {
  font-size: var(--fs-lg);
  margin-bottom: var(--sp-md);
}

.card__text {
  color: var(--c-gray-300);
  line-height: var(--lh-normal);
  font-size: var(--fs-sm);
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

/* ==========================================================================
   About / Profile
   ========================================================================== */

.about-intro {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--sp-3xl);
  align-items: center;
}

.about-intro__image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 2px solid var(--c-border);
  position: relative;
}

.about-intro__image img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.about-intro__content h2 {
  margin-bottom: var(--sp-lg);
}

.about-intro__content p {
  color: var(--c-gray-300);
  line-height: var(--lh-normal);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--sp-md);
  margin-top: var(--sp-xl);
}

.skill-tag {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  padding: 0.5rem 1rem;
  background: var(--c-navy);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  color: var(--c-gray-300);
  text-align: center;
  transition: all var(--dur-normal) var(--ease);
}

.skill-tag:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
  background: var(--c-gold-glow);
}

/* Process Steps */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.process-step {
  position: relative;
  text-align: center;
  padding: var(--sp-2xl);
}

.process-step__number {
  font-family: var(--ff-display);
  font-size: var(--fs-4xl);
  font-weight: var(--fw-bold);
  color: var(--c-gold);
  opacity: 0.2;
  line-height: 1;
  margin-bottom: var(--sp-lg);
}

.process-step__title {
  font-size: var(--fs-lg);
  margin-bottom: var(--sp-md);
}

.process-step__text {
  color: var(--c-gray-300);
  font-size: var(--fs-sm);
  line-height: var(--lh-normal);
}

/* ==========================================================================
   Testimonials
   ========================================================================== */

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
}

.testimonial-card {
  background: var(--c-charcoal);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-2xl);
  display: flex;
  flex-direction: column;
  transition: transform var(--dur-normal) var(--ease),
              border-color var(--dur-normal) var(--ease);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 168, 83, 0.35);
}

.testimonial-card__stars {
  color: var(--c-gold);
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-md);
  letter-spacing: 2px;
}

.testimonial-card__quote {
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  color: var(--c-gray-200);
  line-height: var(--lh-normal);
  flex: 1;
  margin-bottom: var(--sp-xl);
  font-style: italic;
}

.testimonial-card__author {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
}

.testimonial-card__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--c-border);
}

.testimonial-card__name {
  font-family: var(--ff-display);
  font-size: var(--fs-sm);
  color: var(--c-white);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
}

.testimonial-card__role {
  font-size: var(--fs-xs);
  color: var(--c-gray-400);
  margin-top: 2px;
}

/* ==========================================================================
   Contact Form
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--sp-3xl);
  align-items: start;
}

.form-group {
  margin-bottom: var(--sp-lg);
}

.form-group label {
  display: block;
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  color: var(--c-gray-300);
  margin-bottom: var(--sp-sm);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--c-navy);
  border: 1px solid var(--c-border-solid);
  border-radius: var(--radius);
  color: var(--c-white);
  font-size: var(--fs-base);
  transition: border-color var(--dur-normal) var(--ease);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--c-gray-500);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--c-gold);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-ok,
.form-err {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  padding: var(--sp-md);
  border-radius: var(--radius);
  margin-top: var(--sp-md);
  display: none;
}

.form-ok {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22c55e;
}

.form-err {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

/* Contact Info Cards */
.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  margin-bottom: var(--sp-2xl);
}

.contact-info-card {
  background: var(--c-charcoal);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-xl);
  text-align: center;
  transition: transform var(--dur-normal) var(--ease),
              border-color var(--dur-normal) var(--ease);
}

.contact-info-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212, 168, 83, 0.35);
}

.contact-info-card__icon {
  font-size: var(--fs-2xl);
  color: var(--c-gold);
  margin-bottom: var(--sp-md);
}

.contact-info-card__label {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  color: var(--c-gray-400);
  margin-bottom: var(--sp-sm);
}

.contact-info-card__value {
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  color: var(--c-white);
}

.contact-info-card__value a {
  color: var(--c-white);
}

.contact-info-card__value a:hover {
  color: var(--c-gold);
}

/* Map Placeholder */
.map-placeholder {
  width: 100%;
  height: 300px;
  background: var(--c-charcoal);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-gray-400);
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
}

/* ==========================================================================
   Social Links
   ========================================================================== */

.social-links {
  display: flex;
  gap: var(--sp-md);
}

.social-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border-solid);
  border-radius: var(--radius);
  color: var(--c-gray-400);
  font-size: var(--fs-lg);
  transition: all var(--dur-normal) var(--ease);
}

.social-link:hover {
  border-color: var(--c-gold);
  color: var(--c-gold);
  background: var(--c-gold-glow);
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.cta-section {
  text-align: center;
  padding: var(--sp-4xl) 0;
  position: relative;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, rgba(212, 168, 83, 0.06) 0%, transparent 60%);
  pointer-events: none;
}

.cta-section h2 {
  margin-bottom: var(--sp-md);
}

.cta-section p {
  color: var(--c-gray-300);
  max-width: 480px;
  margin: 0 auto var(--sp-2xl);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--c-charcoal);
  border-top: 1px solid var(--c-border);
  padding: var(--sp-3xl) 0 var(--sp-xl);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--sp-3xl);
  margin-bottom: var(--sp-3xl);
}

.footer__brand {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--c-white);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  margin-bottom: var(--sp-md);
}

.footer__brand span {
  color: var(--c-gold);
}

.footer__desc {
  font-size: var(--fs-sm);
  color: var(--c-gray-400);
  line-height: var(--lh-normal);
  max-width: 300px;
}

.footer__heading {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wider);
  color: var(--c-gold);
  margin-bottom: var(--sp-lg);
}

.footer__links a {
  display: block;
  font-size: var(--fs-sm);
  color: var(--c-gray-400);
  padding: var(--sp-xs) 0;
  transition: color var(--dur-fast) var(--ease);
}

.footer__links a:hover {
  color: var(--c-gold);
}

.footer__bottom {
  border-top: 1px solid var(--c-border);
  padding-top: var(--sp-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-md);
}

.footer__copy {
  font-size: var(--fs-xs);
  color: var(--c-gray-500);
}

.footer__copy span {
  color: var(--c-gold);
}

/* ==========================================================================
   Reveal Animations
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease),
              transform 0.7s var(--ease);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.12s; }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.19s; }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.26s; }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.33s; }
.reveal-stagger.revealed > *:nth-child(6) { transition-delay: 0.40s; }

.reveal-stagger.revealed > * {
  opacity: 1;
  transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-stagger > * {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .hero__scroll::after {
    animation: none;
  }
}

/* ==========================================================================
   Utilities
   ========================================================================== */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.mb-0  { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--sp-sm); }
.mb-md { margin-bottom: var(--sp-md); }
.mb-lg { margin-bottom: var(--sp-lg); }
.mb-xl { margin-bottom: var(--sp-xl); }
.mb-2xl { margin-bottom: var(--sp-2xl); }
.mb-3xl { margin-bottom: var(--sp-3xl); }

.mt-0  { margin-top: 0; }
.mt-sm { margin-top: var(--sp-sm); }
.mt-md { margin-top: var(--sp-md); }
.mt-lg { margin-top: var(--sp-lg); }
.mt-xl { margin-top: var(--sp-xl); }
.mt-2xl { margin-top: var(--sp-2xl); }

.gap-md { gap: var(--sp-md); }
.gap-lg { gap: var(--sp-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }

/* ==========================================================================
   Responsive — Tablet (980px)
   ========================================================================== */

@media (max-width: 980px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__top {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-2xl);
  }

  .about-intro {
    grid-template-columns: 1fr;
    gap: var(--sp-2xl);
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-info-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .process-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================================================
   Responsive — Mobile (720px)
   ========================================================================== */

@media (max-width: 720px) {
  .burger {
    display: flex;
  }

  .mobile-nav {
    display: flex;
  }

  .header__nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    background: var(--c-overlay);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--sp-xl);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur-normal) var(--ease),
                visibility var(--dur-normal) var(--ease);
    z-index: 1000;
  }

  .header__nav.open {
    opacity: 1;
    visibility: visible;
  }

  .header__links {
    flex-direction: column;
    gap: var(--sp-lg);
  }

  .header__links a {
    font-size: var(--fs-base);
  }

  .header__cta {
    margin-left: 0;
  }

  h1 { font-size: var(--fs-2xl); }
  h2 { font-size: var(--fs-2xl); }
  h3 { font-size: var(--fs-lg); }

  .section-title {
    font-size: var(--fs-2xl);
  }

  .portfolio-grid {
    grid-template-columns: 1fr;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .contact-info-grid {
    grid-template-columns: 1fr;
  }

  .process-grid {
    grid-template-columns: 1fr;
  }

  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--sp-xl);
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .hero__title {
    font-size: clamp(2rem, 8vw, 3.5rem);
  }

  .about-intro {
    grid-template-columns: 1fr;
  }

  .about-intro__image {
    max-width: 320px;
    margin: 0 auto;
  }

  .skills-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .filter-tabs {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: var(--sp-sm);
  }

  .filter-tab {
    flex-shrink: 0;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .contact-info-grid {
    grid-template-columns: 1fr;
  }

  .cta-section {
    padding: var(--sp-3xl) 0;
  }
}

/* ==========================================================================
   Scrollbar Styling
   ========================================================================== */

::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--c-navy);
}

::-webkit-scrollbar-thumb {
  background: var(--c-gray-500);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--c-gold);
}