/* ==========================================
   styles.css – Mohammed Alroomi Portfolio
   SWE 363 | KFUPM | 2026
   ========================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
  --bg-primary: #0d0d0f;
  --bg-secondary: #141418;
  --bg-card: #1a1a20;
  --text-primary: #f0f0f4;
  --text-secondary: #9090a0;
  --accent: #00d4aa;
  --accent-dim: rgba(0, 212, 170, 0.12);
  --border: rgba(255, 255, 255, 0.08);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius: 12px;
  --font-body: 'Sora', sans-serif;
  --font-mono: 'Space Mono', monospace;
  --nav-height: 68px;
  --transition: 0.3s ease;
}

/* Light theme overrides */
.light-theme {
  --bg-primary: #f4f4f8;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --text-primary: #12121a;
  --text-secondary: #5a5a6a;
  --accent: #007a60;
  --accent-dim: rgba(0, 122, 96, 0.1);
  --border: rgba(0, 0, 0, 0.08);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background-color var(--transition), color var(--transition);
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--transition);
}

a:hover { opacity: 0.8; }

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

ul { list-style: none; }

/* ---------- Utility ---------- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.accent { color: var(--accent); }

.section {
  padding: 96px 0;
}

.section-alt {
  background-color: var(--bg-secondary);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-sub {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 48px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background-color: var(--accent);
  color: #0d0d0f;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 212, 170, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-sm {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 6px 14px;
  border-radius: 6px;
  transition: all var(--transition);
}

.btn-sm:hover {
  background: var(--accent-dim);
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  background-color: rgba(13, 13, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--transition);
}

.light-theme .navbar {
  background-color: rgba(244, 244, 248, 0.85);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -1px;
}

.nav-links {
  display: flex;
  gap: 36px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--text-primary);
  opacity: 1;
}

.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: all var(--transition);
}

.theme-toggle:hover {
  border-color: var(--accent);
  transform: scale(1.05);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
  padding: calc(var(--nav-height) + 48px) 40px 80px;
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

/* Subtle grid background */
.hero-bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(0, 212, 170, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 170, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
}

.hero-content {
  flex: 1;
  max-width: 560px;
}

.hero-greeting {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent);
  margin-bottom: 16px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-name {
  font-size: clamp(2.8rem, 7vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-weight: 500;
}

.hero-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 420px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Terminal widget */
.hero-terminal {
  flex: 0 0 340px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  font-family: var(--font-mono);
}

.terminal-bar {
  background: #252530;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}
.dot.red    { background: #ff5f56; }
.dot.yellow { background: #ffbd2e; }
.dot.green  { background: #27c93f; }

.terminal-title {
  font-size: 0.75rem;
  color: #666;
  margin-left: auto;
}

.terminal-body {
  padding: 20px;
  font-size: 0.82rem;
  line-height: 2;
}

.t-prompt {
  color: var(--accent);
  margin-right: 8px;
}

.t-output {
  color: var(--text-secondary);
  padding-left: 20px;
}

.t-blink {
  color: var(--accent);
}

.t-blink::after {
  content: '';
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 64px;
  align-items: start;
}

.about-image-wrapper {
  flex-shrink: 0;
}

.about-image-placeholder {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: var(--accent-dim);
  border: 2px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.about-image-wrapper img {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--accent);
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 1.02rem;
}

.about-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detail-label {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.detail-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.status-open {
  color: var(--accent);
}

/* ---------- Projects ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--accent);
}

.project-image {
  height: 160px;
  background: var(--bg-secondary);
  overflow: hidden;
  position: relative;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.project-card:hover .project-image img {
  transform: scale(1.04);
}

.project-img-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 2.8rem;
  background: var(--accent-dim);
}

.project-body {
  padding: 24px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 4px;
  background: var(--accent-dim);
  color: var(--accent);
  letter-spacing: 0.04em;
}

.project-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.project-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.project-links {
  display: flex;
  gap: 12px;
}

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 32px;
}

.skill-category h4 {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skill-tag {
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.88rem;
  color: var(--text-primary);
  transition: all var(--transition);
}

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

/* ---------- Contact ---------- */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 64px;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.03em;
}

.form-group input,
.form-group textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: border-color var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-secondary);
}

.form-error {
  font-size: 0.8rem;
  color: #ff5f56;
  min-height: 1em;
}

.form-success {
  display: none;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 14px 18px;
  font-size: 0.92rem;
  color: var(--accent);
}

.form-success.visible {
  display: block;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-label {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.contact-item p, .contact-item a {
  font-size: 0.95rem;
  color: var(--text-primary);
  word-break: break-all;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
}

.footer p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.footer-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  margin-top: 6px;
  opacity: 0.6;
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero {
    flex-direction: column;
    padding: calc(var(--nav-height) + 40px) 24px 64px;
    text-align: center;
  }

  .hero-content { max-width: 100%; }
  .hero-cta { justify-content: center; }
  .hero-sub { margin: 0 auto 36px; }
  .hero-terminal { width: 100%; max-width: 420px; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image-wrapper {
    display: flex;
    justify-content: center;
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 48px;
  }
}

@media (max-width: 640px) {
  .navbar { padding: 0 20px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .section { padding: 72px 0; }
  .about-details { grid-template-columns: 1fr; }
}

/* Mobile nav open state */
.nav-links.open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  padding: 24px;
  border-bottom: 1px solid var(--border);
  gap: 20px;
  z-index: 999;
}

/* ---------- Scroll Fade-in Animations ---------- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- About Tagline & Achievements ---------- */
.about-tagline {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 20px;
  font-style: italic;
}

.achievements-strip {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.achievement-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--text-primary);
  flex: 1;
  min-width: 140px;
}

.badge-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}

/* ---------- Experience ---------- */
.experience-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.exp-card {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 24px;
  padding-bottom: 40px;
}

.exp-card:last-child {
  padding-bottom: 0;
}

.exp-left {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.exp-logo {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
}

.exp-line {
  width: 2px;
  flex: 1;
  background: var(--border);
  margin-top: 12px;
}

.exp-body {
  padding-top: 4px;
}

.exp-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.exp-role {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.exp-company {
  font-size: 0.88rem;
  color: var(--accent);
  font-family: var(--font-mono);
}

.exp-meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.exp-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.exp-location {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.exp-badge {
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 20px;
  font-weight: 600;
}

.exp-badge.win {
  background: rgba(255, 215, 0, 0.15);
  color: #ffd700;
  border: 1px solid rgba(255, 215, 0, 0.3);
}

.exp-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.exp-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Responsive for experience */
@media (max-width: 640px) {
  .exp-card {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .exp-left {
    flex-direction: row;
    align-items: center;
    gap: 12px;
  }

  .exp-line {
    width: auto;
    flex: 1;
    height: 2px;
    margin-top: 0;
  }

  .exp-header {
    flex-direction: column;
  }

  .exp-meta {
    align-items: flex-start;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .achievements-strip {
    flex-direction: column;
  }
}