/* ================================
   style.css — Mariam Fekry Portfolio
   ================================ */

/* --- Variables (Color Palette) --- */
:root {
  --bg: #D4C4B0;
  --accent: #B8924A;
  --dark: #2A1F15;
  --neutral: #F0E8DC;
  --white: #FAF7F2;
  --text-muted: #6B5D4F;
  --overlay: rgba(42, 31, 21, 0.6);
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --nav-height: 72px;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--dark);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

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

/* --- Utility --- */
.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: var(--dark);
}

/* reveal animation base */
.reveal {
  opacity: 0;
  transform: translateY(40px);
}

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

/* --- Navbar --- */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 3rem;
  z-index: 1000;
  background: linear-gradient(180deg, rgba(42, 31, 21, 0.4) 0%, transparent 100%);
  transition: background var(--transition), box-shadow var(--transition), height var(--transition);
}

#navbar.scrolled {
  background: rgba(212, 196, 176, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 20px rgba(42, 31, 21, 0.08);
  height: 60px;
}

.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.nav-logo img {
  height: 52px;
  width: auto;
  transition: height var(--transition);
  border-radius: 4px;
}

#navbar.scrolled .nav-logo img {
  height: 42px;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--white);
  position: relative;
  transition: color var(--transition);
}

#navbar.scrolled .nav-links a {
  color: var(--dark);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
/* --- Hero --- */
#hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#hero video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(42, 31, 21, 0.55) 0%,
    rgba(42, 31, 21, 0.7) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--white);
  padding: 0 1.5rem;
}

.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.2rem;
  opacity: 0;
  transform: translateY(20px);
}

.hero-name {
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1rem;
  opacity: 0;
  transform: translateY(30px);
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 300;
  color: rgba(250, 247, 242, 0.8);
  margin-bottom: 2.5rem;
  opacity: 0;
  transform: translateY(20px);
}

.hero-cta {
  display: inline-block;
  padding: 0.85rem 2.4rem;
  border: 1.5px solid var(--accent);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: background var(--transition), color var(--transition);
  opacity: 0;
  transform: translateY(20px);
}

.hero-cta:hover {
  background: var(--accent);
  color: var(--dark);
}

/* --- About --- */
#about {
  display: flex;
  align-items: center;
  gap: 4rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 6rem 3rem;
}

.about-image {
  flex: 0 0 380px;
  position: relative;
}

.about-image::after {
  content: '';
  position: absolute;
  top: 16px;
  left: 16px;
  width: 100%;
  height: 96%;
  border: 1.5px solid var(--accent);
  z-index: -1;
}

.about-image img {
  width: 100%;
  height: 407px;
  object-fit: cover;
  object-position: top center;
}

.about-content {
  flex: 1;
}

.about-content h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.2rem;
  color: var(--dark);
}

.about-content p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.btn-cv {
  display: inline-block;
  padding: 0.8rem 2rem;
  background: var(--dark);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: background var(--transition), transform var(--transition);
}

.btn-cv:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

/* --- Projects --- */
#projects {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 3rem;
  background: var(--neutral);
}

.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.55rem 1.4rem;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1.5px solid transparent;
  border-radius: 2px;
  transition: all var(--transition);
}

.filter-btn:hover {
  color: var(--dark);
  border-color: var(--accent);
}

.filter-btn.active {
  color: var(--dark);
  border-color: var(--accent);
  background: rgba(184, 146, 74, 0.1);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: 300px;
  gap: 1rem;
}

.project-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  background: var(--white);
  transition: transform var(--transition), box-shadow var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(42, 31, 21, 0.12);
}

.project-card.hidden {
  display: none;
}

/* Tech row: 3 equal columns inside a full-width wrapper */
.tech-row {
  grid-column: 1 / -1;
  grid-row: 7;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.tech-row .project-card {
  height: 260px;
  grid-column: auto;
  grid-row: auto;
}

.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.project-card:hover img {
  transform: scale(1.08);
}

/* --- Overlay slide-up --- */
.project-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(42, 31, 21, 0.88);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.8rem;
  transform: translateY(100%);
  transition: transform 0.5s cubic-bezier(0.77, 0, 0.175, 1);
}

.project-card:hover .project-card-overlay {
  transform: translateY(0);
}

/* --- Gold line --- */
.project-card-overlay .overlay-line {
  width: 0;
  height: 1.5px;
  background: var(--accent);
  margin-bottom: 0.8rem;
  transition: width 0.5s cubic-bezier(0.77, 0, 0.175, 1) 0.3s;
}

.project-card:hover .project-card-overlay .overlay-line {
  width: 40px;
}

/* --- Title clip-path reveal --- */
.project-card-overlay h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 0.4rem;
  clip-path: inset(0 100% 0 0);
  transition: clip-path 0.5s cubic-bezier(0.77, 0, 0.175, 1) 0.35s;
}

.project-card:hover .project-card-overlay h3 {
  clip-path: inset(0 0% 0 0);
}

/* --- Category fade-in --- */
.project-card-overlay .overlay-category {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.4s ease 0.55s, transform 0.4s ease 0.55s;
}

.project-card:hover .project-card-overlay .overlay-category {
  opacity: 1;
  transform: translateY(0);
}

/* --- Skills --- */
#skills {
  max-width: 900px;
  margin: 0 auto;
  padding: 6rem 3rem;
}

.skills-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.skill-item {
  padding: 0.7rem 1.6rem;
  background: var(--neutral);
  border: 1px solid rgba(42, 31, 21, 0.08);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--dark);
  letter-spacing: 0.03em;
  transition: all var(--transition);
}

.skill-item:hover {
  background: var(--accent);
  color: var(--white);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* --- Contact --- */
#contact {
  max-width: 900px;
  margin: 0 auto;
  padding: 6rem 3rem;
  background: var(--neutral);
}

.contact-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 1.5rem;
  border: none;
  background: transparent;
  transition: all var(--transition);
}

.contact-item:hover {
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: none;
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--white);
  color: var(--accent);
  margin-bottom: 1rem;
  transition: all var(--transition);
  cursor: pointer;
}

.contact-icon:hover {
  background: var(--accent);
  color: var(--white);
  transform: translateY(-3px);
}

.contact-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

.contact-value {
  font-size: 0.95rem;
  color: var(--dark);
  word-break: break-all;
}

/* --- Footer --- */
footer {
  text-align: center;
  padding: 2.5rem 3rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  #navbar {
    padding: 0 1.5rem;
  }

  .nav-links {
    gap: 1.5rem;
  }

  .nav-links a {
    font-size: 0.75rem;
  }

  #about {
    flex-direction: column;
    padding: 4rem 1.5rem;
    gap: 2.5rem;
  }

  .about-image {
    flex: none;
    width: 100%;
    max-width: 340px;
  }

  .about-image::after {
    top: 10px;
    left: 10px;
  }

  .about-image img {
    height: 364px;
    object-fit: cover;
    object-position: top center;
  }

  .about-content {
    text-align: center;
  }

  #projects,
  #skills,
  #contact {
    padding: 4rem 1.5rem;
  }

  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 240px;
  }

  .projects-grid > .project-card {
    grid-column: auto !important;
    grid-row: auto !important;
  }

  .projects-grid > .project-card:nth-child(-n+8) {
    grid-column: auto !important;
    grid-row: auto !important;
  }

  .tech-row {
    grid-column: 1 / -1 !important;
    grid-row: auto !important;
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 480px) {
  .nav-links {
    gap: 1rem;
  }

  .hero-name {
    font-size: 2.4rem;
  }

  .filter-tabs {
    gap: 0.3rem;
  }

  .filter-btn {
    padding: 0.45rem 1rem;
    font-size: 0.7rem;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 220px;
  }

  .projects-grid > .project-card {
    grid-column: auto !important;
    grid-row: auto !important;
  }

  .tech-row {
    grid-column: 1 / -1 !important;
    grid-row: auto !important;
    grid-template-columns: repeat(3, 1fr);
  }

  .tech-row .project-card {
    height: 180px;
  }
}