/* ==========================================================================
   style.css — Binaya Shrestha Portfolio
   Premium UI Upgrade · All existing class names & JS hooks preserved
   ========================================================================== */

/* ── 1. CSS Custom Properties ─────────────────────────────────────────────── */
:root {
    /* Brand */
    --color-primary:        #369F3A;
    --color-primary-hover:  #2F8C33;
    --color-primary-dark:   #28782C;
    --color-primary-light:  #EAF6EB;
    --color-primary-subtle: #F2FAF2;
    --color-primary-glow:   rgba(54, 159, 58, 0.18);
    --color-primary-glow-strong: rgba(54, 159, 58, 0.32);

    /* Backgrounds */
    --color-background:  #FFFFFF;
    --color-surface:     #F9FBF9;
    --color-surface-alt: #F4F8F4;
    --color-surface-raised: #FFFFFF;

    /* Text */
    --color-text:           #111814;
    --color-text-secondary: #3D4E3F;
    --color-text-muted:     #5E7060;
    --color-text-placeholder: #849686;
    --color-primary-text:   #28782C;
    
    /* Border */
    --color-border:       #E2EAE2;
    --color-border-light: #EDF4ED;

    /* Avatar SVG Light Tokens */
    --avatar-ring-outer: #C8E6CA;
    --avatar-ring-mid:   #EAF6EB;
    --avatar-ring-inner: #D4EDD5;
    --avatar-nodes-line: #A5D4A7;
    --avatar-text:       #2F8C33;

    /* Typography */
    --font-display: 'Plus Jakarta Sans', Inter, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-sans:    Inter, 'Plus Jakarta Sans', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

    /* Spacing */
    --space-section-desktop: 100px;
    --space-section-tablet:  72px;
    --space-section-mobile:  56px;

    /* Layout */
    --container-max:     1160px;
    --container-padding: 32px;

    /* Radius */
    --radius-xs:   6px;
    --radius-sm:   10px;
    --radius-md:   16px;
    --radius-lg:   24px;
    --radius-xl:   32px;
    --radius-pill: 999px;

    /* Nav */
    --nav-height: 84px;

    /* Transitions */
    --transition-fast:   160ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base:   240ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow:   380ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 360ms cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Shadows */
    --shadow-xs:          0 1px 3px rgba(16, 36, 18, 0.05), 0 1px 2px rgba(16, 36, 18, 0.04);
    --shadow-sm:          0 2px 8px rgba(16, 36, 18, 0.08), 0 1px 3px rgba(16, 36, 18, 0.05);
    --shadow-card:        0 4px 16px rgba(16, 36, 18, 0.07), 0 8px 32px rgba(16, 36, 18, 0.05), 0 1px 4px rgba(16, 36, 18, 0.04);
    --shadow-card-hover:  0 8px 24px rgba(16, 36, 18, 0.09), 0 20px 56px rgba(16, 36, 18, 0.10), 0 4px 8px rgba(16, 36, 18, 0.05);
    --shadow-nav:         0 4px 16px rgba(16, 36, 18, 0.07), 0 12px 40px -4px rgba(16, 36, 18, 0.09), 0 2px 6px rgba(16, 36, 18, 0.04);
    --shadow-primary:     0 4px 16px var(--color-primary-glow), 0 8px 32px var(--color-primary-glow-strong), 0 1px 4px var(--color-primary-glow);
    --shadow-primary-sm:  0 2px 8px var(--color-primary-glow), 0 4px 16px var(--color-primary-glow);
    --shadow-logo:        0 4px 20px var(--color-primary-glow-strong), 0 1px 6px var(--color-primary-glow), 0 0 0 3px rgba(54, 159, 58, 0.08);
    --shadow-btn:         0 2px 8px rgba(16, 36, 18, 0.07), 0 1px 3px rgba(16, 36, 18, 0.05);
    --shadow-chip:        0 1px 4px rgba(16, 36, 18, 0.06), 0 2px 8px rgba(16, 36, 18, 0.04);
    --shadow-eyebrow:     0 2px 10px rgba(54, 159, 58, 0.10), 0 1px 4px rgba(54, 159, 58, 0.07);
    --shadow-section-label: 0 0 12px var(--color-primary-glow), 0 2px 8px var(--color-primary-glow-strong);

    /* Gradient accents */
    --gradient-primary: linear-gradient(135deg, #369F3A 0%, #4DC254 60%, #5CD663 100%);
    --gradient-hero-bg: radial-gradient(ellipse 80% 60% at 70% 40%, rgba(54,159,58,0.06) 0%, transparent 70%),
                        radial-gradient(ellipse 50% 40% at 20% 80%, rgba(54,159,58,0.04) 0%, transparent 60%);
    --gradient-section-accent: linear-gradient(90deg, var(--color-primary) 0%, #5CD663 100%);
    --gradient-contact-bg: radial-gradient(ellipse 90% 70% at 50% 50%, rgba(54,159,58,0.07) 0%, transparent 70%);
}

[data-theme="dark"] {
    /* Backgrounds */
    --color-background:    #0B120C;
    --color-surface:       #111A12;
    --color-surface-alt:   #162018;
    --color-surface-raised: #1A2A1C;

    /* Text */
    --color-text:           #EDF2EE;
    --color-text-secondary: #A8BAA9;
    --color-text-muted:     #95A897;
    --color-text-placeholder: #788C7A;
    --color-primary-text:   #4DC254;

    /* Border */
    --color-border:       #1E3020;
    --color-border-light: #192A1B;

    /* Brand variants for dark mode */
    --color-primary:        #4DC254;
    --color-primary-hover:  #5CD663;
    --color-primary-dark:   #6EE474;
    --color-primary-light:  #172B19;
    --color-primary-subtle: #111E12;
    --color-primary-glow:   rgba(77, 194, 84, 0.15);
    --color-primary-glow-strong: rgba(77, 194, 84, 0.28);

    /* Shadows */
    --shadow-xs:          0 1px 3px rgba(0, 0, 0, 0.35), 0 1px 2px rgba(0, 0, 0, 0.25);
    --shadow-sm:          0 2px 8px rgba(0, 0, 0, 0.42), 0 1px 3px rgba(0, 0, 0, 0.28);
    --shadow-card:        0 4px 16px rgba(0, 0, 0, 0.45), 0 8px 36px rgba(0, 0, 0, 0.30), 0 1px 4px rgba(0, 0, 0, 0.25);
    --shadow-card-hover:  0 8px 28px rgba(0, 0, 0, 0.55), 0 20px 60px rgba(0, 0, 0, 0.45), 0 4px 8px rgba(0, 0, 0, 0.30);
    --shadow-nav:         0 4px 16px rgba(0, 0, 0, 0.55), 0 12px 48px -4px rgba(0, 0, 0, 0.65), 0 2px 6px rgba(0, 0, 0, 0.40);
    --shadow-primary:     0 4px 16px var(--color-primary-glow), 0 8px 32px var(--color-primary-glow-strong), 0 1px 4px var(--color-primary-glow);
    --shadow-primary-sm:  0 2px 8px var(--color-primary-glow), 0 4px 16px var(--color-primary-glow);
    --shadow-logo:        0 4px 24px var(--color-primary-glow-strong), 0 1px 8px var(--color-primary-glow), 0 0 0 3px rgba(77, 194, 84, 0.12);
    --shadow-btn:         0 2px 10px rgba(0, 0, 0, 0.40), 0 1px 4px rgba(0, 0, 0, 0.30);
    --shadow-chip:        0 1px 6px rgba(0, 0, 0, 0.35), 0 2px 10px rgba(0, 0, 0, 0.20);
    --shadow-eyebrow:     0 2px 12px rgba(77, 194, 84, 0.14), 0 1px 5px rgba(77, 194, 84, 0.10);
    --shadow-section-label: 0 0 14px var(--color-primary-glow), 0 2px 10px var(--color-primary-glow-strong);

    /* Gradient accents */
    --gradient-primary: linear-gradient(135deg, #4DC254 0%, #5CD663 60%, #6EE474 100%);
    --gradient-hero-bg: radial-gradient(ellipse 80% 60% at 70% 40%, rgba(77,194,84,0.08) 0%, transparent 70%),
                        radial-gradient(ellipse 50% 40% at 20% 80%, rgba(77,194,84,0.05) 0%, transparent 60%);
    --gradient-contact-bg: radial-gradient(ellipse 90% 70% at 50% 50%, rgba(77,194,84,0.09) 0%, transparent 70%);

    /* Avatar SVG dark mode tokens */
    --avatar-ring-outer: #1E3822;
    --avatar-ring-mid:   #142A16;
    --avatar-ring-inner: #193320;
    --avatar-nodes-line: #234826;
    --avatar-text:       #4DC254;
}

/* ── 2. Reset & Base ──────────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: 17px;
    line-height: 1.65;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

a:hover { color: var(--color-primary-hover); }

ul { list-style: none; }

/* ── 3. Accessibility — Focus ─────────────────────────────────────────────── */
:focus-visible {
    outline: 2.5px solid var(--color-primary);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

/* ── 4. Reduced Motion ────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ── 5. Container ─────────────────────────────────────────────────────────── */
.container {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-padding);
}

/* ── 6. Navigation ────────────────────────────────────────────────────────── */
.site-nav {
    position: fixed;
    top: 14px;
    left: 0;
    right: 0;
    z-index: 1000;
    pointer-events: none;
    padding-inline: 16px;
    transition: top var(--transition-base);
}

.nav-floating-bar {
    pointer-events: auto;
    max-width: var(--container-max);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 6px 8px 6px 12px;
    height: 54px;
    border-radius: var(--radius-pill);
    background-color: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(20px) saturate(200%) brightness(1.02);
    -webkit-backdrop-filter: blur(20px) saturate(200%) brightness(1.02);
    border: 1px solid rgba(226, 234, 226, 0.80);
    box-shadow: var(--shadow-nav);
    transition:
        background-color var(--transition-base),
        border-color var(--transition-base),
        box-shadow var(--transition-base),
        height var(--transition-base);
}

.site-nav.scrolled .nav-floating-bar {
    background-color: rgba(255, 255, 255, 0.95);
    border-color: var(--color-border);
    box-shadow:
        0 16px 48px -8px rgba(16, 36, 18, 0.14),
        0 4px 16px rgba(16, 36, 18, 0.06);
}

/* Logo & Brand */
.nav-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.nav-logo-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--gradient-primary);
    box-shadow: var(--shadow-logo);
    transition: transform var(--transition-spring), box-shadow var(--transition-fast);
}

.nav-logo:hover .nav-logo-badge {
    transform: scale(1.08) rotate(-3deg);
    box-shadow: var(--shadow-primary), 0 0 0 4px rgba(54, 159, 58, 0.14);
}

.nav-logo-icon {
    width: 18px;
    height: 18px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.nav-logo-mark {
    font-family: var(--font-display);
    font-size: 15.5px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.4px;
}

/* Navigation Links Container */
.nav-menu {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2px;
    background: rgba(0, 0, 0, 0.04);
    padding: 3px;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
}

.nav-links a {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 14px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--color-text-muted);
    border-radius: var(--radius-pill);
    transition:
        color var(--transition-fast),
        background-color var(--transition-fast),
        box-shadow var(--transition-fast);
    white-space: nowrap;
    position: relative;
}

.nav-links a .nav-icon {
    width: 14px;
    height: 14px;
    stroke-width: 2;
    flex-shrink: 0;
    transition: transform var(--transition-spring);
    opacity: 0.7;
}

.nav-links a:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-subtle);
}

.nav-links a:hover .nav-icon {
    transform: translateY(-1.5px);
    opacity: 1;
}

/* Active navigation pill state */
.nav-links a.active {
    color: #FFFFFF !important;
    background: var(--gradient-primary) !important;
    font-weight: 600;
    box-shadow: var(--shadow-primary-sm);
}

.nav-links a.active .nav-icon {
    stroke: #FFFFFF;
    opacity: 1;
}

/* Actions Right */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

/* Theme toggle button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    background: var(--color-surface);
    color: var(--color-text-muted);
    cursor: pointer;
    flex-shrink: 0;
    transition:
        color var(--transition-fast),
        border-color var(--transition-fast),
        background-color var(--transition-fast),
        transform var(--transition-spring);
}

.theme-toggle:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: var(--color-primary-subtle);
    transform: translateY(-1px) rotate(15deg);
    box-shadow: var(--shadow-eyebrow);
}

.theme-toggle:active {
    transform: translateY(0) rotate(0deg);
}

/* Theme Icon Visibility Rules */
.theme-toggle .theme-icon {
    display: none;
}

[data-theme-setting="system"] .theme-toggle .icon-system,
[data-theme-setting="light"]  .theme-toggle .icon-light,
[data-theme-setting="dark"]   .theme-toggle .icon-dark {
    display: block;
}

/* Nav LinkedIn button */
.nav-linkedin {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    height: 36px;
    color: var(--color-primary-text);
    background-color: var(--color-primary-subtle);
    border: 1px solid rgba(54, 159, 58, 0.20);
    padding: 0 14px;
    border-radius: var(--radius-pill);
    text-decoration: none;
    box-shadow: 0 1px 3px rgba(16, 36, 18, 0.06);
    transition:
        color var(--transition-fast),
        border-color var(--transition-fast),
        background-color var(--transition-fast),
        box-shadow var(--transition-fast),
        transform var(--transition-spring);
    flex-shrink: 0;
}

.nav-linkedin:hover {
    color: #FFFFFF;
    border-color: var(--color-primary);
    background: var(--gradient-primary);
    box-shadow: var(--shadow-primary-sm);
    transform: translateY(-1px);
}

/* Mobile hamburger */
.nav-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    background: var(--color-surface);
    cursor: pointer;
    flex-shrink: 0;
    position: relative;
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.nav-toggle:hover {
    border-color: var(--color-primary);
    background-color: var(--color-primary-subtle);
    box-shadow: var(--shadow-eyebrow);
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 16px;
    height: 1.75px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-base);
    position: absolute;
}

.hamburger::before { content: ""; top: -5px; }
.hamburger::after  { content: ""; top: 5px; }

.nav-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}
.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg) translate(3.5px, 3.5px);
}
.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg) translate(3.5px, -3.5px);
}

/* Mobile floating menu card */
.mobile-menu {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 16px;
    right: 16px;
    max-width: var(--container-max);
    margin: 0 auto;
    border-radius: var(--radius-lg);
    background-color: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--color-border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12), 0 4px 16px rgba(0, 0, 0, 0.06);
    padding: 10px 12px;
    overflow: hidden;
    pointer-events: auto;
}

.mobile-menu.open {
    display: block;
    animation: menuSlideDown 220ms cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

@keyframes menuSlideDown {
    from { opacity: 0; transform: translateY(-8px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0)   scale(1); }
}

.mobile-menu ul {
    padding: 0;
}

.mobile-link {
    display: flex;
    align-items: center;
    padding: 11px 14px;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background-color var(--transition-fast);
    margin-bottom: 2px;
}

.mobile-link:hover {
    color: var(--color-primary);
    background-color: var(--color-primary-subtle);
}

.mobile-link.active {
    color: var(--color-primary);
    background-color: var(--color-primary-subtle);
    font-weight: 600;
}

.mobile-linkedin {
    color: var(--color-primary);
    font-weight: 600;
    margin-top: 4px;
    border-top: 1px solid var(--color-border-light);
    padding-top: 13px;
}

/* Dark Theme Nav Overrides */
[data-theme="dark"] .nav-floating-bar {
    background-color: rgba(14, 22, 15, 0.85);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
        0 16px 40px -8px rgba(0, 0, 0, 0.75),
        0 4px 16px rgba(0, 0, 0, 0.50),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .site-nav.scrolled .nav-floating-bar {
    background-color: rgba(14, 22, 15, 0.96);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow:
        0 20px 50px -8px rgba(0, 0, 0, 0.85),
        0 4px 20px rgba(0, 0, 0, 0.60),
        inset 0 1px 0 rgba(255, 255, 255, 0.10);
}

[data-theme="dark"] .nav-links {
    background: rgba(0, 0, 0, 0.35);
    border-color: rgba(255, 255, 255, 0.07);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .nav-links a {
    color: #D2DDD3;
}

[data-theme="dark"] .nav-links a .nav-icon {
    opacity: 0.82;
    stroke: currentColor;
}

[data-theme="dark"] .nav-links a:hover {
    color: #FFFFFF;
    background-color: rgba(255, 255, 255, 0.09);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.25);
}

[data-theme="dark"] .nav-links a:hover .nav-icon {
    opacity: 1;
    stroke: var(--color-primary);
    transform: translateY(-1.5px);
}

[data-theme="dark"] .nav-links a.active {
    color: #FFFFFF !important;
    background: var(--gradient-primary) !important;
    font-weight: 600;
    box-shadow: 0 2px 10px rgba(77, 194, 84, 0.35);
}

[data-theme="dark"] .nav-links a.active .nav-icon {
    stroke: #FFFFFF !important;
    opacity: 1;
}

[data-theme="dark"] .theme-toggle {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.10);
    color: #D2DDD3;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .theme-toggle:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: rgba(77, 194, 84, 0.16);
    box-shadow: 0 0 14px rgba(77, 194, 84, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .nav-linkedin {
    color: #EDF2EE;
    background-color: rgba(77, 194, 84, 0.12);
    border-color: rgba(77, 194, 84, 0.30);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .nav-linkedin:hover {
    color: #FFFFFF;
    background: var(--gradient-primary);
    border-color: transparent;
    box-shadow: var(--shadow-primary-sm), 0 0 14px rgba(77, 194, 84, 0.25);
    transform: translateY(-1px);
}

[data-theme="dark"] .nav-toggle {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.10);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .nav-toggle:hover {
    background-color: rgba(77, 194, 84, 0.16);
    border-color: var(--color-primary);
    box-shadow: 0 0 12px rgba(77, 194, 84, 0.25);
}

[data-theme="dark"] .hamburger,
[data-theme="dark"] .hamburger::before,
[data-theme="dark"] .hamburger::after {
    background-color: #EDF2EE;
}

[data-theme="dark"] .mobile-menu {
    background-color: rgba(14, 22, 15, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.09);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.75),
        0 4px 20px rgba(0, 0, 0, 0.50),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

[data-theme="dark"] .mobile-link {
    color: #D2DDD3;
}

[data-theme="dark"] .mobile-link:hover,
[data-theme="dark"] .mobile-link.active {
    color: #FFFFFF;
    background-color: rgba(77, 194, 84, 0.16);
}

[data-theme="dark"] .mobile-linkedin {
    border-top-color: rgba(255, 255, 255, 0.08);
    color: var(--color-primary);
}

[data-theme="dark"] .mobile-linkedin:hover {
    color: #FFFFFF;
    background: var(--gradient-primary);
}

[data-theme="dark"] .exp-type-badge,
[data-theme="dark"] .edu-icon {
    border-color: #1E3820;
}

[data-theme="dark"] .exp-tag,
[data-theme="dark"] .chip {
    border-color: #1A3020;
}

[data-theme="dark"] .contact-section {
    background: radial-gradient(ellipse 90% 70% at 50% 50%, rgba(77,194,84,0.06) 0%, transparent 70%),
                var(--color-background);
}

/* ── 7. Buttons ───────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 22px;
    font-family: var(--font-sans);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--radius-pill);
    border: 1.5px solid transparent;
    cursor: pointer;
    text-decoration: none;
    line-height: 1;
    white-space: nowrap;
    transition:
        background-color var(--transition-fast),
        color var(--transition-fast),
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        transform var(--transition-spring);
    min-height: 46px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-btn);
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0);
    transition: background var(--transition-fast);
    border-radius: inherit;
    pointer-events: none;
}

.btn:hover { transform: translateY(-2px); }
.btn:hover::after { background: rgba(255,255,255,0.06); }
.btn:active { transform: translateY(0); }

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    border-color: transparent;
    box-shadow: var(--shadow-primary-sm), var(--shadow-btn);
}

.btn-primary:hover {
    color: #fff;
    box-shadow: var(--shadow-primary), 0 6px 20px rgba(54, 159, 58, 0.22);
}

.btn-secondary {
    background-color: var(--color-background);
    color: var(--color-text);
    border-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background-color: var(--color-primary-subtle);
    box-shadow: var(--shadow-card), var(--shadow-eyebrow);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    box-shadow: none;
}

.btn-lg {
    padding: 14px 30px;
    font-size: 16px;
    min-height: 52px;
}

/* ── 8. Section Common ────────────────────────────────────────────────────── */
.section {
    padding-block: var(--space-section-desktop);
}

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

.section-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 52px;
}

/* Upgraded section accent — gradient pill with trailing line */
.section-label {
    display: flex;
    align-items: center;
    gap: 0;
    flex-shrink: 0;
    position: relative;
}

.section-label::before {
    content: '';
    display: block;
    width: 4px;
    height: 28px;
    background: var(--gradient-primary);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-section-label);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.65rem, 3vw, 2.25rem);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.035em;
    line-height: 1.18;
    text-shadow: var(--shadow-heading);
}

/* Eyebrow / label */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-primary-text);
    margin-bottom: 18px;
    padding: 5px 14px;
    background: var(--color-primary-subtle);
    border: 1px solid rgba(54, 159, 58, 0.18);
    border-radius: var(--radius-pill);
    box-shadow: var(--shadow-eyebrow);
}

.eyebrow::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
    animation: pulseDot 2s ease-in-out infinite;
}

@keyframes pulseDot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(0.75); }
}

/* ── 9. Hero ──────────────────────────────────────────────────────────────── */
.hero {
    padding-top: calc(var(--space-section-desktop) + 30px);
    padding-bottom: var(--space-section-desktop);
    background-color: var(--color-background);
    overflow: hidden;
    position: relative;
}

/* Animated gradient mesh background */
.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 60%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(54,159,58,0.08) 0%, transparent 65%);
    animation: heroBlobA 12s ease-in-out infinite alternate;
    border-radius: 50%;
    transform-origin: center;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -10%;
    left: -5%;
    width: 45%;
    height: 65%;
    background: radial-gradient(ellipse, rgba(54,159,58,0.05) 0%, transparent 65%);
    animation: heroBlobB 15s ease-in-out infinite alternate;
    border-radius: 50%;
}

@keyframes heroBlobA {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-4%, 6%) scale(1.08); }
}

@keyframes heroBlobB {
    0%   { transform: translate(0, 0) scale(1); }
    100% { transform: translate(4%, -5%) scale(1.06); }
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 420px;
    align-items: center;
    gap: 72px;
    position: relative;
    z-index: 1;
}

.hero-text { max-width: 620px; }

/* Hero name with gradient text */
.hero-text h1 {
    font-family: var(--font-display);
    font-size: clamp(2.7rem, 5.5vw, 4.6rem);
    font-weight: 800;
    letter-spacing: -0.045em;
    line-height: 1.18;
    color: var(--color-text);
    margin-bottom: 16px;
    padding-bottom: 0.12em;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text) 40%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: clamp(1.05rem, 1.6vw, 1.2rem);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 14px;
    font-weight: 400;
}

.hero-sub {
    font-size: 15.5px;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 36px;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 28px;
}

.hero-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--color-text-muted);
}

.hero-meta svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

/* Hero avatar SVG */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-avatar-svg {
    width: 100%;
    max-width: 380px;
    height: auto;
    filter:
        drop-shadow(0 8px 24px var(--color-primary-glow))
        drop-shadow(0 24px 64px var(--color-primary-glow-strong))
        drop-shadow(0 2px 8px rgba(16, 36, 18, 0.08));
}

/* Slow spin on outer dashed ring via CSS animation on a wrapper group */
.hero-avatar-svg circle:first-child {
    animation: slowSpin 60s linear infinite;
    transform-origin: 180px 180px;
}

@keyframes slowSpin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.hero-avatar-logo {
    transition: transform var(--transition-base);
    transform-origin: 180px 180px;
}

.hero-avatar-svg:hover .hero-avatar-logo {
    transform: scale(1.06);
}

/* ── 10. About ────────────────────────────────────────────────────────────── */
.about-body {
    max-width: 740px;
}

.about-text {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

/* ── 11. Experience Card ──────────────────────────────────────────────────── */
.exp-card {
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 40px;
    box-shadow: var(--shadow-card);
    max-width: 820px;
    transition: box-shadow var(--transition-base), transform var(--transition-spring);
    position: relative;
    overflow: hidden;
}

/* Left gradient accent border */
.exp-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-pill) 0 0 var(--radius-pill);
}

.exp-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-3px);
}

.exp-card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 16px;
}

.exp-title-group { flex: 1; }

.exp-role {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.25;
    margin-bottom: 5px;
}

.exp-company {
    font-size: 15.5px;
    font-weight: 600;
    color: var(--color-primary-text);
}

.exp-type-badge {
    flex-shrink: 0;
    font-size: 11.5px;
    font-weight: 700;
    color: var(--color-primary-text);
    background-color: var(--color-primary-subtle);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(54, 159, 58, 0.20);
    white-space: nowrap;
    letter-spacing: 0.03em;
    box-shadow: var(--shadow-eyebrow);
}

.exp-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 26px;
    color: var(--color-text-muted);
    font-size: 13.5px;
}

.exp-meta-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.exp-meta-item svg { color: var(--color-primary); flex-shrink: 0; }
.exp-meta-sep { color: var(--color-border); }

.exp-bullets {
    margin-bottom: 28px;
    padding-left: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.exp-bullets li {
    position: relative;
    padding-left: 22px;
    font-size: 15.5px;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Custom arrow bullet */
.exp-bullets li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--color-primary);
    border-top: 2px solid var(--color-primary);
    transform: rotate(45deg);
    border-radius: 1px;
    opacity: 0.8;
}

.exp-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border-light);
}

.exp-tag {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-primary-text);
    background-color: var(--color-primary-subtle);
    border: 1px solid rgba(54, 159, 58, 0.18);
    border-radius: var(--radius-pill);
    padding: 4px 13px;
    letter-spacing: 0.02em;
    transition: background-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-spring);
}

.exp-tag:hover {
    background-color: var(--color-primary-light);
    box-shadow: var(--shadow-primary-sm);
    transform: translateY(-1px);
}

/* ── 12. Expertise ────────────────────────────────────────────────────────── */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
    gap: 24px;
}

/* Glassmorphism expertise group cards */
.expertise-group {
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px 22px;
    box-shadow: var(--shadow-xs);
    transition: box-shadow var(--transition-base), transform var(--transition-spring), border-color var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.expertise-group::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.expertise-group:hover {
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
    border-color: rgba(54, 159, 58, 0.25);
}

.expertise-group:hover::before {
    opacity: 1;
}

.expertise-category {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-text-muted);
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--color-border-light);
}

.chip-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--color-text-secondary);
    background-color: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-spring),
        box-shadow var(--transition-fast);
    cursor: default;
    user-select: none;
    box-shadow: var(--shadow-chip);
}

.chip:hover {
    background-color: var(--color-primary-subtle);
    border-color: rgba(54, 159, 58, 0.30);
    color: var(--color-primary-text);
    transform: translateY(-1.5px);
    box-shadow: var(--shadow-primary-sm), var(--shadow-chip);
}

/* ── 13. Education ────────────────────────────────────────────────────────── */
.edu-card {
    display: flex;
    align-items: center;
    gap: 22px;
    background: var(--color-surface-raised);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 30px 36px;
    max-width: 540px;
    box-shadow: var(--shadow-card);
    transition: box-shadow var(--transition-base), transform var(--transition-spring);
    position: relative;
    overflow: hidden;
}

.edu-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

.edu-card:hover {
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-3px);
}

.edu-card:hover::after {
    transform: scaleX(1);
}

.edu-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    color: #FFFFFF;
    flex-shrink: 0;
    box-shadow: var(--shadow-logo);
}

.edu-institution {
    font-family: var(--font-display);
    font-size: 1.08rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
    margin-bottom: 5px;
}

.edu-label {
    font-size: 13.5px;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ── 14. Contact ──────────────────────────────────────────────────────────── */
.contact-section {
    position: relative;
    overflow: hidden;
    background: var(--color-background);
}

.contact-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-contact-bg);
    pointer-events: none;
}

/* Decorative rings */
.contact-section::after {
    content: '';
    position: absolute;
    bottom: -120px;
    right: -120px;
    width: 360px;
    height: 360px;
    border: 1.5px solid rgba(54, 159, 58, 0.08);
    border-radius: 50%;
    pointer-events: none;
}

.contact-inner {
    text-align: center;
    max-width: 580px;
    padding-block: 0;
    position: relative;
    z-index: 1;
}

.contact-heading {
    font-family: var(--font-display);
    font-size: clamp(1.85rem, 3vw, 2.6rem);
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.04em;
    margin-bottom: 18px;
    line-height: 1.1;
    text-shadow: var(--shadow-heading);
}

.contact-text {
    font-size: 17px;
    color: var(--color-text-secondary);
    line-height: 1.75;
    margin-bottom: 36px;
}

/* ── 15. Footer ───────────────────────────────────────────────────────────── */
.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border-light);
    padding-block: 30px;
    position: relative;
}

/* Gradient top accent line */
.site-footer::before {
    content: '';
    position: absolute;
    top: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--color-primary) 30%, #5CD663 70%, transparent 100%);
    opacity: 0.35;
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.footer-copy {
    font-size: 13.5px;
    color: var(--color-text-muted);
}

.footer-linkedin {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast), transform var(--transition-spring), box-shadow var(--transition-fast);
}

.footer-linkedin:hover {
    color: var(--color-primary);
    transform: translateY(-1px);
    box-shadow: none;
    text-shadow: 0 0 16px var(--color-primary-glow);
}

/* Back-to-top link */
.footer-top {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-muted);
    padding: 5px 12px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-border);
    background: var(--color-background);
    box-shadow: var(--shadow-xs);
    transition: color var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-spring);
}

.footer-top:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-eyebrow), var(--shadow-sm);
}

/* ── 16. Reveal Animation ─────────────────────────────────────────────────── */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition:
        opacity 540ms cubic-bezier(0.4, 0, 0.2, 1),
        transform 540ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Staggered delays for child items */
.reveal-delay-1 { transition-delay: 80ms; }
.reveal-delay-2 { transition-delay: 160ms; }
.reveal-delay-3 { transition-delay: 240ms; }
.reveal-delay-4 { transition-delay: 320ms; }

/* ── 17. Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
    :root { --container-padding: 28px; }

    .hero-inner {
        grid-template-columns: 1fr 340px;
        gap: 48px;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 20px;
        --space-section-desktop: var(--space-section-tablet);
    }

    /* Nav */
    .nav-links,
    .nav-linkedin { display: none; }
    .nav-toggle   { display: flex; }

    /* Hero */
    .hero {
        padding-top: calc(var(--space-section-tablet) + 16px);
        padding-bottom: var(--space-section-tablet);
    }

    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 44px;
    }

    .hero-text { max-width: 100%; }

    .hero-cta {
        justify-content: center;
    }

    .hero-meta { justify-content: center; }

    .hero-visual { order: -1; }

    .hero-avatar-svg { max-width: 260px; }

    /* Expertise */
    .expertise-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    /* Exp card */
    .exp-card {
        padding: 28px 28px 28px 32px;
    }

    .exp-card-header {
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    :root {
        --space-section-desktop: var(--space-section-mobile);
    }

    .hero-text h1 { letter-spacing: -0.04em; }

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

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .btn { justify-content: center; }

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

    .exp-meta-sep { display: none; }

    .footer-inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .nav-li-label { display: none; }

    .exp-card {
        padding: 22px 20px 22px 24px;
    }

    .edu-card {
        padding: 22px 24px;
    }

    .contact-text br { display: none; }
}

/* ── 18. Print ────────────────────────────────────────────────────────────── */
@media print {
    .site-nav,
    .hero-visual,
    .hero-cta,
    .site-footer { display: none; }

    body { font-size: 12pt; }
    .section { padding-block: 24pt; }
}