/* ============================================================
   style.css — Portofolio Farid Wajdi
   Tema: Sleek Engineer / Terminal Aesthetic — Dark Mode
   Palet: #0f172a (bg), #38bdf8 (aksen biru), #4ade80 (hijau),
          #f8fafc (teks utama), #94a3b8 (teks sekunder)
   Font: IBM Plex Mono (monospace seragam untuk semua teks)
   ============================================================ */

/* ---------- CUSTOM PROPERTIES ---------- */
:root {
    --color-bg: #0f172a;
    --color-bg-elevated: #1e293b;
    --color-bg-card: #1a2332;
    --color-accent-blue: #38bdf8;
    --color-accent-green: #4ade80;
    --color-accent-amber: #f59e0b;
    --color-text-primary: #f8fafc;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    --color-border: #1e293b;
    --color-border-light: #334155;

    --font-mono: 'IBM Plex Mono', 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow-blue: 0 0 20px rgba(56, 189, 248, 0.15);
    --shadow-glow-green: 0 0 20px rgba(74, 222, 128, 0.12);

    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    --container-max: 1100px;
    --navbar-height: 70px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
}

body {
    font-family: var(--font-mono);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.7;
    font-size: 16px;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

strong {
    font-weight: 600;
    color: var(--color-text-primary);
}

em {
    font-style: italic;
    color: var(--color-accent-blue);
}

/* ---------- UTILITY: Container ---------- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ---------- HIGHLIGHT ---------- */
.highlight {
    color: var(--color-accent-blue);
    font-weight: 500;
}

/* ---------- SECTION HEADER ---------- */
.section-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.section-header__number {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-accent-blue);
    opacity: 0.8;
}

.section-header__title {
    font-family: var(--font-mono);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text-primary);
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.section-header__line {
    flex: 1;
    height: 1px;
    background: var(--color-border-light);
    min-width: 40px;
    margin-top: 2px;
}

/* ---------- SCROLL-REVEAL ANIMATION ---------- */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition-base);
    height: var(--navbar-height);
    display: flex;
    align-items: center;
}

.navbar--scrolled {
    box-shadow: var(--shadow-md);
    border-bottom-color: var(--color-border-light);
}

.navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.navbar__logo {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 1px;
    white-space: nowrap;
}

.navbar__logo-icon { color: var(--color-accent-green); font-weight: 500; margin-right: 2px; }
.navbar__logo-dot { color: var(--color-accent-blue); font-weight: 700; }
.navbar__logo:hover { color: var(--color-accent-blue); }

.navbar__list {
    display: flex;
    gap: 28px;
}

.navbar__link {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
    padding: 6px 0;
    transition: color var(--transition-fast);
}

.navbar__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent-blue);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

.navbar__link:hover,
.navbar__link--active {
    color: var(--color-accent-blue);
}
.navbar__link:hover::after,
.navbar__link--active::after {
    width: 100%;
}

/* Hamburger */
.navbar__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 4px;
    z-index: 1001;
}
.navbar__hamburger-line {
    display: block;
    width: 26px;
    height: 2.5px;
    background: var(--color-text-primary);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base), opacity var(--transition-fast);
}
.navbar__hamburger[aria-expanded="true"] .navbar__hamburger-line:nth-child(1) { transform: translateY(7.5px) rotate(45deg); }
.navbar__hamburger[aria-expanded="true"] .navbar__hamburger-line:nth-child(2) { opacity: 0; }
.navbar__hamburger[aria-expanded="true"] .navbar__hamburger-line:nth-child(3) { transform: translateY(-7.5px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
    position: relative;
    min-height: calc(100vh - var(--navbar-height));
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 24px 80px;
    overflow: hidden;
}

.hero__bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(56, 189, 248, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: 0;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 70%);
}

.hero__inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; gap: 18px; }

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-accent-green);
    background: rgba(74, 222, 128, 0.08);
    border: 1px solid rgba(74, 222, 128, 0.2);
    padding: 8px 18px;
    border-radius: var(--radius-full);
}
.hero__badge-dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--color-accent-green);
    box-shadow: 0 0 8px var(--color-accent-green);
    animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 6px var(--color-accent-green); }
    50% { opacity: 0.5; box-shadow: 0 0 14px var(--color-accent-green); }
}

.hero__name {
    font-family: var(--font-mono);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -2px;
    line-height: 1.1;
}
.hero__title { font-size: clamp(0.95rem, 2vw, 1.2rem); color: var(--color-text-secondary); max-width: 600px; }
.hero__title-divider { color: var(--color-accent-blue); margin: 0 6px; font-weight: 300; }
.hero__title-highlight { color: var(--color-accent-blue); font-weight: 500; }
.hero__tagline { font-size: 0.9rem; color: var(--color-text-muted); max-width: 550px; }
.hero__prompt { color: var(--color-accent-green); font-weight: 600; margin-right: 2px; }

.hero__actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 8px;
}

.hero__terminal-line { margin-top: 18px; font-size: 0.85rem; color: var(--color-text-muted); }
.hero__terminal-prompt { color: var(--color-accent-green); }
.hero__terminal-cursor { color: var(--color-accent-blue); animation: blink 1s step-end infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 0.88rem;
    font-weight: 500;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    letter-spacing: 0.3px;
    white-space: nowrap;
}
.btn--primary {
    background: var(--color-accent-blue);
    color: #0f172a;
    font-weight: 600;
    box-shadow: var(--shadow-glow-blue);
}
.btn--primary:hover { background: #7dd3fc; box-shadow: 0 0 28px rgba(56, 189, 248, 0.3); transform: translateY(-2px); }
.btn--outline {
    background: transparent;
    color: var(--color-accent-blue);
    border: 2px solid var(--color-accent-blue);
}
.btn--outline:hover { background: rgba(56, 189, 248, 0.08); border-color: #7dd3fc; color: #7dd3fc; transform: translateY(-2px); }
.btn--small { font-size: 0.78rem; padding: 8px 16px; border-radius: var(--radius-sm); }
.btn--primary-outline {
    background: transparent;
    color: var(--color-accent-blue);
    border: 1.5px solid rgba(56, 189, 248, 0.4);
}
.btn--primary-outline:hover { background: rgba(56, 189, 248, 0.08); border-color: var(--color-accent-blue); box-shadow: var(--shadow-glow-blue); }
.btn__icon { font-size: 0.75rem; }
.btn__arrow { transition: transform var(--transition-fast); }
.btn:hover .btn__arrow { transform: translateX(4px); }

/* ============================================================
   ABOUT
   ============================================================ */
.about {
    padding: 80px 0;
}

.about__content {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    align-items: start;
}

/* Foto Profil */
.about__photo {
    position: relative;
    width: 100%;
    max-width: 260px;
    justify-self: center;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: linear-gradient(145deg, #1e293b, #0f172a);
    border: 2px solid var(--color-border-light);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.about__photo:hover {
    border-color: var(--color-accent-blue);
    box-shadow: var(--shadow-glow-blue);
}
.about__photo img {
    width: 100%;
    height: auto;
    display: block;
    filter: grayscale(20%) contrast(1.05);
    transition: filter var(--transition-base);
}
.about__photo:hover img {
    filter: grayscale(0%) contrast(1.1);
}
.about__photo-frame {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    border: 1px solid rgba(56, 189, 248, 0.15);
    pointer-events: none;
}

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

.about__text p {
    color: var(--color-text-secondary);
    margin-bottom: 16px;
    font-size: 0.98rem;
    line-height: 1.85;
}

/* Terminal Card */
.about__card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition-base), border-color var(--transition-base);
}
.about__card:hover { border-color: var(--color-accent-blue); box-shadow: var(--shadow-lg), var(--shadow-glow-blue); }
.about__card-header {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 16px;
    background: #111827;
    border-bottom: 1px solid var(--color-border-light);
}
.about__card-dot { width: 11px; height: 11px; border-radius: 50%; flex-shrink: 0; }
.about__card-dot--red { background: #f87171; }
.about__card-dot--yellow { background: #fbbf24; }
.about__card-dot--green { background: #4ade80; }
.about__card-title { font-size: 0.75rem; color: var(--color-text-muted); margin-left: 6px; }
.about__card-body { padding: 20px; }
.about__card-body p { font-size: 0.85rem; color: var(--color-text-secondary); margin-bottom: 10px; }
.about__card-key { color: var(--color-accent-green); font-weight: 500; }

/* ============================================================
   EXPERIENCE / TIMELINE
   ============================================================ */
.experience {
    padding: 80px 0;
    background: var(--color-bg);
}

.timeline {
    position: relative;
    padding-left: 30px;
    border-left: 2px solid var(--color-border-light);
    margin-left: 20px;
}

.timeline__item {
    position: relative;
    margin-bottom: 36px;
}

.timeline__dot {
    position: absolute;
    left: -39px;
    top: 4px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--color-accent-blue);
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.4);
    border: 2px solid var(--color-bg);
}

.timeline__content {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}
.timeline__content:hover {
    border-color: var(--color-accent-blue);
    box-shadow: var(--shadow-md);
}

.timeline__date {
    font-size: 0.8rem;
    color: var(--color-accent-blue);
    font-weight: 600;
    display: block;
    margin-bottom: 6px;
}

.timeline__title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.timeline__subtitle {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.timeline__desc {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills {
    padding: 80px 0;
}

.skills__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.skills-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    transition: all var(--transition-base);
    position: relative;
}
.skills-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 3px; height: 100%;
    background: var(--color-accent-blue);
    border-radius: 0 var(--radius-full) var(--radius-full) 0;
    opacity: 0;
    transition: opacity var(--transition-base);
}
.skills-card:hover {
    border-color: var(--color-accent-blue);
    box-shadow: var(--shadow-lg), var(--shadow-glow-blue);
    transform: translateY(-4px);
}
.skills-card:hover::before { opacity: 1; }
.skills-card__icon { margin-bottom: 16px; font-size: 1.5rem; }
.skills-card__title { font-weight: 600; color: var(--color-text-primary); margin-bottom: 14px; }
.skills-card__list li {
    font-size: 0.88rem;
    color: var(--color-text-secondary);
    padding-left: 18px;
    position: relative;
    margin-bottom: 8px;
}
.skills-card__list li::before {
    content: '▹';
    position: absolute;
    left: 0;
    color: var(--color-accent-blue);
}

/* ============================================================
   CERTIFICATIONS
   ============================================================ */
.certifications {
    padding: 80px 0;
    background: var(--color-bg);
}

.certs__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.cert-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 24px;
    text-align: center;
    transition: all var(--transition-base);
}
.cert-card:hover {
    border-color: var(--color-accent-blue);
    box-shadow: var(--shadow-glow-blue);
    transform: translateY(-3px);
}
.cert-card__icon { font-size: 2rem; margin-bottom: 12px; }
.cert-card__title { font-weight: 600; color: var(--color-text-primary); margin-bottom: 6px; font-size: 0.95rem; }
.cert-card__issuer { font-size: 0.8rem; color: var(--color-text-secondary); margin-bottom: 8px; }
.cert-card__year { font-size: 0.75rem; color: var(--color-accent-blue); font-weight: 500; }

/* ============================================================
   PROJECTS
   ============================================================ */
.projects {
    padding: 80px 0;
}

.projects__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.project-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}
.project-card:hover { border-color: var(--color-accent-blue); box-shadow: var(--shadow-lg), var(--shadow-glow-blue); transform: translateY(-6px); }
.project-card__image {
    width: 100%;
    aspect-ratio: 16 / 10;
    background: linear-gradient(135deg, #1a2332 0%, #162032 100%);
    display: flex; align-items: center; justify-content: center;
    border-bottom: 1px solid var(--color-border-light);
    font-size: 2rem;
    color: var(--color-text-muted);
}
.project-card__body { padding: 20px; display: flex; flex-direction: column; gap: 12px; flex: 1; }
.project-card__title { font-weight: 600; color: var(--color-text-primary); }
.project-card__desc { font-size: 0.88rem; color: var(--color-text-secondary); line-height: 1.6; flex: 1; }
.project-card__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--color-accent-blue);
    background: rgba(56, 189, 248, 0.08);
    border: 1px solid rgba(56, 189, 248, 0.2);
    padding: 4px 10px;
    border-radius: var(--radius-full);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
    padding: 80px 0 100px;
    text-align: center;
}
.contact .section-header { justify-content: center; }
.contact__intro { font-size: 1rem; color: var(--color-text-secondary); max-width: 500px; margin: 0 auto 40px; }
.contact__links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 750px;
    margin: 0 auto;
}
.contact-card {
    display: flex; flex-direction: column; align-items: center; gap: 10px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 28px 20px;
    transition: all var(--transition-base);
}
.contact-card:hover { border-color: var(--color-accent-blue); box-shadow: var(--shadow-lg), var(--shadow-glow-blue); transform: translateY(-4px); }
.contact-card__icon { font-size: 1.8rem; }
.contact-card__label { font-weight: 600; color: var(--color-text-primary); }
.contact-card__value { font-size: 0.8rem; color: var(--color-text-muted); }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: var(--color-bg-card);
    border-top: 1px solid var(--color-border-light);
    padding: 28px 0;
    text-align: center;
}
.footer__inner { display: flex; flex-direction: column; gap: 6px; }
.footer__text { font-size: 0.85rem; color: var(--color-text-muted); }
.footer__heart { color: #f87171; }
.footer__quote { font-size: 0.78rem; color: var(--color-text-muted); font-style: italic; opacity: 0.7; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
    .about__content { grid-template-columns: 1fr; }
    .about__photo { max-width: 220px; margin: 0 auto 20px; }
    .skills__grid { grid-template-columns: repeat(2, 1fr); }
    .projects__grid { grid-template-columns: repeat(2, 1fr); }
    .contact__links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .navbar__nav {
        position: fixed; top: 0; right: -100%; width: 280px; height: 100vh;
        background: var(--color-bg-elevated); border-left: 1px solid var(--color-border-light);
        padding: 90px 28px 40px; flex-direction: column;
        transition: right var(--transition-slow);
        z-index: 999;
    }
    .navbar__nav--open { right: 0; }
    .navbar__list { flex-direction: column; gap: 6px; }
    .navbar__link { font-size: 1rem; padding: 12px 0; display: block; border-bottom: 1px solid var(--color-border-light); }
    .navbar__link::after { display: none; }
    .navbar__hamburger { display: flex; }

    .hero__actions { flex-direction: column; width: 100%; max-width: 300px; }
    .hero__actions .btn { width: 100%; justify-content: center; }

    .skills__grid { grid-template-columns: 1fr; }
    .projects__grid { grid-template-columns: 1fr; }
    .contact__links { grid-template-columns: 1fr; max-width: 350px; }
    .timeline { margin-left: 10px; padding-left: 20px; }
    .timeline__dot { left: -29px; }
}