/* =============================================
   VARIABLES & RESET
   ============================================= */
:root {
    --navy:      #0d1b2a;
    --navy-mid:  #1b2d3e;
    --blue:      #1e4976;
    --accent:    #c0392b;
    --accent2:   #e74c3c;
    --gold:      #f39c12;
    --white:     #ffffff;
    --off-white: #f7f8fa;
    --gray-100:  #f1f3f5;
    --gray-200:  #e9ecef;
    --gray-400:  #adb5bd;
    --gray-600:  #6c757d;
    --gray-800:  #343a40;
    --text:      #212529;

    /* Light mode surface tokens */
    --bg-page:    #ffffff;
    --bg-section: #f7f8fa;
    --bg-card:    #ffffff;
    --border:     #e9ecef;
    --text-body:  #212529;
    --text-muted: #6c757d;
    --text-head:  #0d1b2a;

    --font:      'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius:    12px;
    --radius-lg: 20px;
    --shadow:    0 4px 20px rgba(0,0,0,.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.14);
    --trans:     .3s ease;

    --nav-h:     70px;
}

/* =============================================
   DARK MODE VARIABLES
   ============================================= */
[data-theme="dark"] {
    --bg-page:    #0f1923;
    --bg-section: #131e2a;
    --bg-card:    #1a2636;
    --border:     #263549;
    --text-body:  #c8d6e5;
    --text-muted: #7f96b0;
    --text-head:  #e8f0fa;
    --white:      #e8f0fa;
    --off-white:  #131e2a;
    --gray-100:   #1a2636;
    --gray-200:   #263549;
    --gray-600:   #7f96b0;
    --gray-800:   #c8d6e5;
    --shadow:     0 4px 20px rgba(0,0,0,.35);
    --shadow-lg:  0 12px 40px rgba(0,0,0,.5);
}

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

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

body {
    font-family: var(--font);
    color: var(--text-body, var(--text));
    line-height: 1.65;
    background: var(--bg-page);
    overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a   { text-decoration: none; color: inherit; }
ul  { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font); }

.container {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
}

/* =============================================
   SECTION COMMONS
   ============================================= */
.section      { padding: 96px 0; }
.section-dark { background: var(--navy); color: var(--white); }
.section-light{ background: var(--off-white); }
.section-accent{ background: linear-gradient(135deg, var(--navy) 0%, var(--blue) 100%); color: var(--white); }

.section-header         { margin-bottom: 56px; }
.section-header.center  { text-align: center; }

.section-label {
    display: inline-block;
    font-size: .8rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 10px;
}
.section-label.light { color: rgba(255,255,255,.6); }

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-head, var(--navy));
}
.section-title.light { color: var(--white); }

.section-sub {
    margin-top: 12px;
    color: var(--gray-600);
    font-size: 1.05rem;
}

/* =============================================
   NAVBAR
   ============================================= */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--nav-h);
    background: rgba(13, 27, 42, .96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid rgba(255,255,255,.06);
    transition: box-shadow var(--trans);
}
.navbar.scrolled { box-shadow: 0 4px 24px rgba(0,0,0,.25); }

.nav-container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.logo {
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--white);
    flex-shrink: 0;
}
.logo-last { color: var(--accent2); margin-left: 4px; }

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-link {
    padding: 6px 12px;
    border-radius: 8px;
    font-size: .88rem;
    font-weight: 500;
    color: rgba(255,255,255,.7);
    transition: all var(--trans);
    white-space: nowrap;
}
.nav-link:hover,
.nav-link.active { color: var(--white); background: rgba(255,255,255,.1); }

.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

/* Theme toggle (dark/light mode) */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1.5px solid rgba(255,255,255,.25);
    color: var(--white);
    font-size: 1rem;
    transition: all var(--trans);
    background: transparent;
}
.theme-toggle:hover {
    border-color: var(--gold);
    background: rgba(243,156,18,.15);
    transform: rotate(20deg);
}
[data-theme="dark"] .theme-toggle {
    border-color: rgba(255,255,255,.35);
    background: rgba(243,156,18,.1);
}

/* Language toggle */
.lang-toggle {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 6px 12px;
    border-radius: 20px;
    border: 1.5px solid rgba(255,255,255,.25);
    color: var(--white);
    font-size: .82rem;
    font-weight: 700;
    transition: all var(--trans);
    letter-spacing: .04em;
}
.lang-toggle:hover {
    border-color: var(--accent2);
    background: rgba(231,76,60,.15);
}
.lang-flag { font-size: 1rem; }

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}
.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all var(--trans);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============================================
   HERO
   ============================================= */
.hero {
    min-height: 100vh;
    background: linear-gradient(140deg, var(--navy) 0%, #172233 55%, #1a3050 100%);
    color: var(--white);
    display: flex;
    align-items: center;
    padding-top: var(--nav-h);
    position: relative;
    overflow: hidden;
}

/* Particles canvas */
.particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}
.particle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,.12);
    animation: drift linear infinite;
}
@keyframes drift {
    from { transform: translateY(0) rotate(0deg); opacity: .8; }
    to   { transform: translateY(-100vh) rotate(360deg); opacity: 0; }
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 64px;
    align-items: center;
    position: relative;
    z-index: 1;
    padding: 60px 0;
}

.hero-tagline {
    font-size: .85rem;
    font-weight: 700;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--accent2);
    margin-bottom: 16px;
}

.hero-title {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 20px;
}
.gradient-text {
    background: linear-gradient(90deg, #e74c3c, #f39c12);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.05rem;
    color: rgba(255,255,255,.75);
    line-height: 1.75;
    max-width: 480px;
    margin-bottom: 24px;
}

.hero-brands {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 36px;
}
.brand-badge {
    padding: 5px 14px;
    border-radius: 20px;
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.2);
    font-size: .82rem;
    font-weight: 600;
    letter-spacing: .03em;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

/* Image frame */
.hero-image { position: relative; }
.hero-img-frame {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 30px 80px rgba(0,0,0,.4);
}
.hero-img-frame::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(13,27,42,.6) 0%, transparent 60%);
    z-index: 1;
}
.hero-photo {
    width: 100%;
    height: 500px;
    object-fit: cover;
    object-position: top center;
    display: block;
}

.hero-img-badge {
    position: absolute;
    bottom: 20px;
    left: 20px;
    z-index: 2;
    background: var(--accent);
    color: var(--white);
    padding: 12px 16px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: 0 8px 20px rgba(192,57,43,.4);
}
.badge-number { display: block; font-size: 1.8rem; font-weight: 900; line-height: 1; }
.badge-text   { display: block; font-size: .72rem; font-weight: 600; text-transform: uppercase; letter-spacing: .06em; margin-top: 2px; }

/* Scroll down indicator */
.scroll-down {
    position: absolute;
    bottom: 28px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}
.scroll-dot {
    display: block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(255,255,255,.5);
    animation: bounce 2s infinite;
}
@keyframes bounce {
    0%, 100% { transform: translateY(0); opacity: .5; }
    50%       { transform: translateY(10px); opacity: 1; }
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 13px 28px;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: .95rem;
    transition: all var(--trans);
    border: 2px solid transparent;
    white-space: nowrap;
}
.btn-primary {
    background: var(--accent);
    color: var(--white);
    box-shadow: 0 4px 16px rgba(192,57,43,.35);
}
.btn-primary:hover {
    background: var(--accent2);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(231,76,60,.4);
}
.btn-ghost {
    background: transparent;
    color: var(--white);
    border-color: rgba(255,255,255,.35);
}
.btn-ghost:hover {
    background: rgba(255,255,255,.1);
    border-color: var(--white);
}
.btn-full { width: 100%; }

/* =============================================
   ABOUT
   ============================================= */
.about-grid {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 72px;
    align-items: start;
}

.about-img-wrap {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.about-img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    object-position: top center;
    display: block;
}
.about-img-deco {
    position: absolute;
    top: -16px;
    left: -16px;
    right: 16px;
    bottom: 16px;
    border: 3px solid var(--accent);
    border-radius: var(--radius-lg);
    z-index: -1;
}
.about-location {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 16px;
    color: var(--gray-600);
    font-size: .9rem;
    font-weight: 500;
}

.about-intro {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 16px;
    line-height: 1.7;
}
.about-content p { color: var(--gray-600); margin-bottom: 28px; }

.about-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 36px;
}
.highlight-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    background: var(--off-white);
    border-radius: 10px;
    font-size: .9rem;
    font-weight: 600;
    color: var(--navy);
    border-left: 3px solid var(--accent);
}
.highlight-icon { font-size: 1.1rem; }

.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
}
.stat-item { text-align: center; }
.stat-num {
    display: inline-block;
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--accent);
}
.stat-plus { font-size: 1.4rem; font-weight: 700; color: var(--accent); }
.stat-item p {
    font-size: .78rem;
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-top: 2px;
}

/* =============================================
   EXPERTISE
   ============================================= */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.expertise-card {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: all var(--trans);
}
.expertise-card:hover {
    background: rgba(255,255,255,.1);
    border-color: var(--accent2);
    transform: translateY(-4px);
}

.exp-icon-wrap {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: rgba(231,76,60,.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}
.exp-icon { font-size: 1.5rem; }

.expertise-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--white);
}
.expertise-card p {
    font-size: .9rem;
    color: rgba(255,255,255,.6);
    line-height: 1.65;
}

/* =============================================
   TIMELINE
   ============================================= */
.timeline {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 0;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent), var(--blue), transparent);
    transform: translateX(-50%);
}

.tl-item {
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 36px);
    padding-bottom: 40px;
    position: relative;
}
.tl-item.right {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 36px);
}

.tl-dot {
    position: absolute;
    left: 50%;
    top: 24px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 3px solid var(--white);
    box-shadow: 0 0 0 3px var(--accent);
    transform: translateX(-50%);
    z-index: 1;
}

.tl-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    max-width: 440px;
    transition: box-shadow var(--trans), transform var(--trans);
}
.tl-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.tl-card.current { border-left: 4px solid var(--accent); }

.tl-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}
.tl-date {
    font-size: .8rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: .06em;
}
.tl-badge {
    padding: 3px 10px;
    border-radius: 20px;
    font-size: .72rem;
    font-weight: 700;
}
.current-badge {
    background: rgba(192,57,43,.12);
    color: var(--accent);
}

.tl-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 4px;
}
.tl-company {
    font-size: .85rem;
    color: var(--gray-600);
    margin-bottom: 10px;
    font-weight: 500;
}
.tl-card p { font-size: .9rem; color: var(--gray-600); }
.tl-result {
    margin-top: 12px;
    display: inline-block;
    padding: 5px 14px;
    background: rgba(192,57,43,.1);
    color: var(--accent);
    border-radius: 20px;
    font-size: .82rem;
    font-weight: 700;
}

/* =============================================
   ACHIEVEMENTS
   ============================================= */
.ach-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.ach-card {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--radius-lg);
    padding: 40px 28px;
    text-align: center;
    transition: all var(--trans);
}
.ach-card:hover {
    background: rgba(255,255,255,.14);
    transform: translateY(-4px);
}
.ach-card.highlight-card {
    background: var(--accent);
    border-color: var(--accent2);
    box-shadow: 0 12px 40px rgba(192,57,43,.4);
}
.ach-icon { font-size: 2.5rem; margin-bottom: 8px; }
.ach-number {
    font-size: 3rem;
    font-weight: 900;
    color: var(--gold);
    line-height: 1.1;
    margin-bottom: 10px;
}
.ach-number span { font-size: 2rem; }
.ach-text-num {
    font-size: 1.5rem;
    color: var(--white);
}
.ach-card p { font-size: .95rem; color: rgba(255,255,255,.8); font-weight: 500; }
.highlight-card p { color: rgba(255,255,255,.9); }

/* =============================================
   GALLERY
   ============================================= */
.gal-filters {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}
.gal-filter {
    padding: 8px 22px;
    border-radius: 24px;
    border: 2px solid var(--gray-200);
    font-size: .88rem;
    font-weight: 600;
    color: var(--gray-600);
    transition: all var(--trans);
}
.gal-filter.active,
.gal-filter:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 240px;
    gap: 16px;
}
.gal-item {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius);
    cursor: pointer;
    background: var(--gray-100);
}
.gal-item.large { grid-row: span 2; }
.gal-item.hidden { display: none; }

.gal-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
}
.gal-item:hover img { transform: scale(1.07); }

.gal-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(13,27,42,.85) 0%, transparent 55%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 20px;
    opacity: 0;
    transition: opacity var(--trans);
}
.gal-item:hover .gal-overlay { opacity: 1; }
.gal-overlay h3 { color: var(--white); font-size: 1rem; font-weight: 700; margin-bottom: 3px; }
.gal-overlay p  { color: rgba(255,255,255,.75); font-size: .82rem; }

/* =============================================
   SKILLS
   ============================================= */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 64px;
}

.skill-block {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    transition: all var(--trans);
}
.skill-block:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
    border-color: var(--accent);
}
.skill-block-icon { font-size: 1.8rem; margin-bottom: 12px; }
.skill-block h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--accent);
}
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}
.tags span {
    padding: 4px 11px;
    border-radius: 16px;
    font-size: .78rem;
    font-weight: 600;
    background: var(--navy);
    color: var(--white);
    letter-spacing: .02em;
}

/* Education */
.education { max-width: 720px; margin: 0 auto; }
.edu-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 24px;
    text-align: center;
}
.edu-grid { display: flex; flex-direction: column; gap: 16px; }
.edu-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 18px 22px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
}
.edu-year {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--accent);
    min-width: 50px;
    padding-top: 2px;
}
.edu-content { display: flex; flex-direction: column; gap: 3px; }
.edu-content strong { font-size: .95rem; color: var(--navy); font-weight: 700; }
.edu-content span { font-size: .85rem; color: var(--gray-600); }

/* =============================================
   CONTACT
   ============================================= */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 56px;
    align-items: start;
}

.contact-cards { display: flex; flex-direction: column; gap: 16px; }
.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 18px 20px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
    transition: all var(--trans);
}
.contact-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-lg);
    transform: translateX(4px);
}
.cc-icon { font-size: 1.6rem; min-width: 40px; text-align: center; }
.cc-content { display: flex; flex-direction: column; gap: 2px; }
.cc-content strong { font-size: .88rem; font-weight: 700; color: var(--gray-800); text-transform: uppercase; letter-spacing: .05em; }
.cc-content span { font-size: .9rem; color: var(--gray-600); }

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: .82rem; font-weight: 700; color: var(--gray-800); text-transform: uppercase; letter-spacing: .05em; }
.form-group input,
.form-group textarea {
    padding: 12px 16px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: .95rem;
    transition: border-color var(--trans), box-shadow var(--trans);
    width: 100%;
    background: var(--white);
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(192,57,43,.12);
}
.form-group textarea { resize: vertical; }

.form-success {
    display: none;
    color: #27ae60;
    font-weight: 600;
    font-size: .9rem;
    padding: 10px;
    background: rgba(39,174,96,.1);
    border-radius: 8px;
    text-align: center;
}
.form-success.visible { display: block; }

/* =============================================
   FOOTER
   ============================================= */
.footer {
    background: var(--navy);
    color: rgba(255,255,255,.6);
    padding: 40px 0;
}
.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    text-align: center;
}
.footer-name  { font-size: 1.2rem; font-weight: 800; color: var(--white); }
.footer-role  { font-size: .85rem; color: rgba(255,255,255,.5); }
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; justify-content: center; }
.footer-links a { font-size: .88rem; font-weight: 500; color: rgba(255,255,255,.6); transition: color var(--trans); }
.footer-links a:hover { color: var(--accent2); }
.footer-copy { font-size: .8rem; }

/* Developer credit */
.footer-dev {
    width: 100%;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,.1);
    text-align: center;
}
.footer-dev-label {
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: rgba(255,255,255,.3);
    margin-bottom: 8px;
}
.footer-dev-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}
.footer-dev-name {
    font-size: .95rem;
    font-weight: 700;
    color: rgba(255,255,255,.75);
}
.footer-dev-role {
    font-size: .78rem;
    color: rgba(255,255,255,.4);
    margin-bottom: 6px;
}
.footer-dev-contacts {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}
.footer-dev-link {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: .8rem;
    color: rgba(255,255,255,.45);
    transition: color var(--trans);
}
.footer-dev-link:hover { color: #25d366; }

/* WhatsApp card */
.contact-card-wa {
    border-color: #25d366 !important;
    background: rgba(37, 211, 102, .04);
    position: relative;
}
.contact-card-wa:hover {
    background: rgba(37, 211, 102, .1) !important;
    border-color: #25d366 !important;
    box-shadow: 0 4px 20px rgba(37,211,102,.2) !important;
}
.wa-icon {
    width: 28px;
    height: 28px;
    fill: #25d366;
    flex-shrink: 0;
}
.wa-icon-sm {
    width: 14px;
    height: 14px;
    fill: #25d366;
    flex-shrink: 0;
}
.wa-badge {
    position: absolute;
    top: -8px;
    right: 12px;
    background: #25d366;
    color: #fff;
    font-size: .68rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 10px;
    letter-spacing: .04em;
    text-transform: uppercase;
}

/* =============================================
   LIGHTBOX
   ============================================= */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.92);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 24px;
}
.lightbox.open { display: flex; }
.lb-img {
    max-width: 90vw;
    max-height: 80vh;
    object-fit: contain;
    border-radius: var(--radius);
}
.lb-caption { color: rgba(255,255,255,.7); margin-top: 12px; font-size: .95rem; }
.lb-close {
    position: absolute;
    top: 20px;
    right: 24px;
    color: var(--white);
    font-size: 1.5rem;
    background: rgba(255,255,255,.15);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--trans);
}
.lb-close:hover { background: var(--accent); }

/* =============================================
   BACK TO TOP
   ============================================= */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 28px;
    z-index: 900;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(192,57,43,.4);
    opacity: 0;
    transform: translateY(16px);
    pointer-events: none;
    transition: opacity .3s ease, transform .3s ease, background .2s ease;
    cursor: pointer;
}
.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.back-to-top:hover {
    background: var(--accent2);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(231,76,60,.45);
}

/* =============================================
   SCROLL ANIMATION
   ============================================= */
[data-aos] {
    opacity: 0;
    transition: opacity .6s ease, transform .6s ease;
}
[data-aos="fade-up"]    { transform: translateY(30px); }
[data-aos="fade-right"] { transform: translateX(-30px); }
[data-aos="fade-left"]  { transform: translateX(30px); }
[data-aos="zoom-in"]    { transform: scale(.94); }
[data-aos].aos-animate  { opacity: 1; transform: none; }

/* =============================================
   RESPONSIVE — TABLET (≤ 1024px)
   ============================================= */
@media (max-width: 1024px) {
    .hero-grid        { grid-template-columns: 1fr; gap: 48px; }
    .hero-image       { order: -1; display: flex; justify-content: center; }
    .hero-photo       { height: 380px; max-width: 320px; }
    .hero-text        { text-align: center; }
    .hero-brands,
    .hero-buttons     { justify-content: center; }
    .hero-desc        { margin: 0 auto 24px; }

    .about-grid       { grid-template-columns: 1fr; gap: 40px; }
    .about-visual     { display: none; }

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

    .timeline::before { left: 20px; }
    .tl-item,
    .tl-item.right    { padding-right: 0; padding-left: 60px; justify-content: flex-start; }
    .tl-dot           { left: 20px; }
    .tl-card          { max-width: 100%; }

    .ach-grid         { grid-template-columns: repeat(2, 1fr); }
    .gallery-grid     { grid-template-columns: repeat(2, 1fr); }
    .skills-grid      { grid-template-columns: repeat(2, 1fr); }
    .contact-grid     { grid-template-columns: 1fr; gap: 36px; }
    .stats-row        { grid-template-columns: repeat(2, 1fr); }
    .about-highlights { grid-template-columns: 1fr; }
}

/* =============================================
   RESPONSIVE — MOBILE (≤ 640px)
   ============================================= */
@media (max-width: 640px) {
    :root { --nav-h: 60px; }

    .section { padding: 64px 0; }

    /* Hide text on lang toggle to save space */
    .lang-text { display: none; }

    .nav-links {
        display: none;
        position: fixed;
        top: var(--nav-h);
        left: 0; right: 0;
        background: rgba(13,27,42,.98);
        flex-direction: column;
        padding: 16px;
        gap: 4px;
        border-bottom: 1px solid rgba(255,255,255,.08);
        z-index: 999;
    }
    .nav-links.open { display: flex; }
    .hamburger { display: flex; }
    .nav-link { padding: 10px 14px; font-size: .95rem; }

    .hero-photo       { height: 280px; }
    .hero-img-badge   { bottom: 12px; left: 12px; }

    .expertise-grid   { grid-template-columns: 1fr; }
    .ach-grid         { grid-template-columns: 1fr 1fr; }
    .gallery-grid     { grid-template-columns: 1fr; grid-auto-rows: 220px; }
    .gal-item.large   { grid-row: span 1; }
    .skills-grid      { grid-template-columns: 1fr 1fr; }
    .form-row         { grid-template-columns: 1fr; }

    .section-title    { font-size: 1.6rem; }
    .hero-title       { font-size: 2rem; }
    .stats-row        { grid-template-columns: repeat(2,1fr); gap: 12px; }
    .stat-num         { font-size: 1.8rem; }

    /* Timeline mobile */
    .timeline::before { left: 16px; }
    .tl-item, .tl-item.right { padding-left: 48px; }
    .tl-dot { left: 16px; }
    .tl-card { padding: 18px; }

    /* Contact cards mobile */
    .contact-cards { gap: 12px; }
    .contact-card  { padding: 14px; }
    .cc-icon       { font-size: 1.3rem; min-width: 32px; }

    /* Achievements mobile 2 cols */
    .ach-number { font-size: 2.2rem; }

    /* Footer dev mobile */
    .footer-dev-contacts { flex-direction: column; gap: 8px; align-items: center; }
}

/* =============================================
   RESPONSIVE — SMALL MOBILE (≤ 380px)
   ============================================= */
@media (max-width: 380px) {
    .hero-title    { font-size: 1.7rem; }
    .hero-tagline  { font-size: .75rem; }
    .hero-buttons  { flex-direction: column; }
    .btn           { width: 100%; text-align: center; }
    .ach-grid      { grid-template-columns: 1fr; }
    .skills-grid   { grid-template-columns: 1fr; }
    .brand-badge   { font-size: .75rem; padding: 4px 10px; }
    .tl-card h3    { font-size: .95rem; }
}

/* =============================================
   DARK MODE — LIGHT SECTIONS OVERRIDES
   ============================================= */
[data-theme="dark"] body { background: var(--bg-page); color: var(--text-body); }

/* About */
[data-theme="dark"] .about          { background: var(--bg-section); }
[data-theme="dark"] .about-intro    { color: var(--text-head); }
[data-theme="dark"] .about-content p { color: var(--text-muted); }
[data-theme="dark"] .highlight-item { background: var(--bg-card); color: var(--text-head); }
[data-theme="dark"] .stat           { background: var(--bg-card); box-shadow: var(--shadow); }
[data-theme="dark"] .about-location { color: var(--text-muted); }

/* Journey */
[data-theme="dark"] .journey        { background: var(--bg-section); }
[data-theme="dark"] .tl-card        { background: var(--bg-card); border-color: var(--border); }
[data-theme="dark"] .tl-card h3     { color: var(--text-head); }
[data-theme="dark"] .tl-company     { color: var(--text-muted); }
[data-theme="dark"] .tl-card p      { color: var(--text-muted); }
[data-theme="dark"] .tl-dot         { border-color: var(--bg-section); }

/* Gallery */
[data-theme="dark"] .gallery        { background: var(--bg-page); }
[data-theme="dark"] .gal-filter     { background: var(--bg-card); border-color: var(--border); color: var(--text-muted); }
[data-theme="dark"] .gal-filter.active { background: var(--accent); border-color: var(--accent); color: #fff; }

/* Skills */
[data-theme="dark"] .skills         { background: var(--bg-section); }
[data-theme="dark"] .skill-block    { background: var(--bg-card); border-color: var(--border); }
[data-theme="dark"] .skill-block h3 { color: var(--text-head); }
[data-theme="dark"] .edu-item       { background: var(--bg-card); border-color: var(--border); }
[data-theme="dark"] .edu-content strong { color: var(--text-head); }
[data-theme="dark"] .edu-content span   { color: var(--text-muted); }

/* Contact */
[data-theme="dark"] .contact        { background: var(--bg-page); }
[data-theme="dark"] .contact-card   { background: var(--bg-card); border-color: var(--border); }
[data-theme="dark"] .contact-card:hover { border-color: var(--accent); }
[data-theme="dark"] .cc-content strong { color: var(--text-muted); }
[data-theme="dark"] .cc-content span   { color: var(--text-body); }
[data-theme="dark"] .form-group input,
[data-theme="dark"] .form-group textarea {
    background: var(--bg-card);
    border-color: var(--border);
    color: var(--text-body);
}
[data-theme="dark"] .form-group label { color: var(--text-muted); }
[data-theme="dark"] .section-sub    { color: var(--text-muted); }

/* Section titles in light sections */
[data-theme="dark"] .about .section-title,
[data-theme="dark"] .journey .section-title,
[data-theme="dark"] .gallery .section-title,
[data-theme="dark"] .skills .section-title,
[data-theme="dark"] .contact .section-title { color: var(--text-head); }

[data-theme="dark"] .about .section-label,
[data-theme="dark"] .journey .section-label,
[data-theme="dark"] .gallery .section-label,
[data-theme="dark"] .skills .section-label,
[data-theme="dark"] .contact .section-label { color: var(--accent2); }