/* ========================================
   Custom Properties
   ======================================== */

:root {
    --bg-primary: #0a0f1a;
    --bg-card: #0f1520;
    --bg-card-hover: #172033;
    --glass-bg: rgba(15, 21, 32, 0.6);
    --glass-border: rgba(255, 255, 255, 0.08);

    --accent-blue: #00d4ff;
    --accent-purple: #7b2ff7;
    --accent-pink: #ff2d95;
    --gradient-main: linear-gradient(135deg, #00d4ff, #7b2ff7);
    --gradient-hot: linear-gradient(135deg, #7b2ff7, #ff2d95);

    --text-primary: #e8e8f0;
    --text-secondary: #8888a0;
    --text-heading: #ffffff;

    --glow-blue: 0 0 25px rgba(0, 212, 255, 0.25);
    --glow-purple: 0 0 25px rgba(123, 47, 247, 0.25);
    --glow-pink: 0 0 25px rgba(255, 45, 149, 0.25);

    --radius: 1rem;
    --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ========================================
   Reset & Base
   ======================================== */

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text-primary);
    background: var(--bg-primary);
    background-image: radial-gradient(ellipse at 50% 30%, rgba(123, 47, 247, 0.06) 0%, transparent 60%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overscroll-behavior: none;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Global focus-visible ring for keyboard navigation */
:focus-visible {
    outline: 2px solid var(--accent-blue);
    outline-offset: 3px;
    border-radius: var(--radius);
}

:focus:not(:focus-visible) {
    outline: none;
}

/* ========================================
   Light Theme
   ======================================== */

[data-theme="light"] {
    --bg-primary: #eef1f8;
    --bg-card: #f8f9fc;
    --bg-card-hover: #e4e8f2;
    --glass-bg: rgba(248, 249, 252, 0.7);
    --glass-border: rgba(0, 0, 0, 0.08);

    --accent-blue: #0091cc;
    --accent-purple: #6518e0;
    --accent-pink: #d6006e;
    --gradient-main: linear-gradient(135deg, #0091cc, #6518e0);
    --gradient-hot: linear-gradient(135deg, #6518e0, #d6006e);

    --text-primary: #1a1a2e;
    --text-secondary: #55556a;
    --text-heading: #0a0a0f;

    --glow-blue: 0 4px 20px rgba(0, 145, 204, 0.15);
    --glow-purple: 0 4px 20px rgba(101, 24, 224, 0.15);
    --glow-pink: 0 4px 20px rgba(214, 0, 110, 0.15);
}

[data-theme="light"] body {
    background-image: radial-gradient(ellipse at 50% 30%, rgba(101, 24, 224, 0.04) 0%, transparent 60%);
}

/* ========================================
   Theme Toggle
   ======================================== */

.theme-toggle {
    align-self: center;
    margin-top: 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition), border-color var(--transition), background var(--transition);
    -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) {
    .theme-toggle:hover {
        color: var(--accent-blue);
        border-color: var(--accent-blue);
    }
}

.theme-toggle:active {
    transform: scale(0.92);
}

/* Dark mode: show sun, hide moon */
.theme-toggle__icon--sun {
    display: block;
}
.theme-toggle__icon--moon {
    display: none;
}

/* Light mode: show moon, hide sun */
[data-theme="light"] .theme-toggle__icon--sun {
    display: none;
}
[data-theme="light"] .theme-toggle__icon--moon {
    display: block;
}

/* ========================================
   Section Titles
   ======================================== */

.section-title {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 0.4rem;
    white-space: nowrap;
}

.section-title::before,
.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gradient-main);
    opacity: 0.3;
}

/* ========================================
   Tech Stack Ticker
   ======================================== */

.ticker {
    overflow: hidden;
    white-space: nowrap;
    padding: 0.75rem 0 1rem;
    border-radius: var(--radius);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    margin-bottom: 1.5rem;
}

.ticker__track {
    display: inline-flex;
    will-change: transform;
    cursor: grab;
    touch-action: pan-y;
}

.ticker__track.is-dragging {
    cursor: grabbing;
}

.ticker__list {
    display: inline-flex;
    gap: 2.5rem;
    padding: 0 1.25rem;
}

.ticker__item {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
    user-select: none;
}

.ticker__item i {
    font-size: 1.4rem;
}


/* ========================================
   Content Layout
   ======================================== */

.content {
    max-width: 1000px;
    width: 100%;
    margin: 0 auto;
    padding: 1.5rem 1.5rem 2rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 2.5fr 1fr;
    gap: 1.5rem;
    align-items: stretch;
    margin-bottom: 1.5rem;
}

.center-stack {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ========================================
   Certifications
   ======================================== */

.certs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.75rem 1.5rem;
    padding: 0.75rem 1.5rem 1rem;
    border-radius: var(--radius);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.cert {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.cert__icon {
    font-size: 1.3rem;
}

.cert__icon--comptia {
    color: #c8202f;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem 2rem;
    border-radius: var(--radius);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
}

.hero__photo-wrapper {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    padding: 3px;
    background: var(--gradient-main);
    margin-bottom: 1.5rem;
    transition: transform var(--transition), box-shadow var(--transition);
}

@media (hover: hover) {
    .hero__photo-wrapper:hover {
        transform: scale(1.05);
        box-shadow: var(--glow-blue);
    }
}

.hero__photo {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    display: block;
}

.hero__name {
    font-size: clamp(1.4rem, 3.5vw, 2rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-heading);
}

.hero__divider {
    width: 60px;
    height: 3px;
    border: none;
    border-radius: 2px;
    background: var(--gradient-main);
    margin-bottom: 1rem;
}

.hero__location {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.hero__bio {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 420px;
    width: 100%;
}

.hero__bio-row {
    display: flex;
    gap: 0.75rem;
    font-size: 0.9rem;
    line-height: 1.5;
    text-align: left;
}

.hero__bio-row dt {
    flex-shrink: 0;
    width: 6rem;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: center;
    padding: 0.2rem 0.65rem;
    border-radius: 999px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    box-shadow: inset 0 0 0 100px rgba(0, 212, 255, 0.06);
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--accent-blue); /* fallback */
    align-self: flex-start;
    margin-top: 0.1rem;
}

[data-theme="light"] .hero__bio-row dt {
    border-color: rgba(0, 145, 204, 0.25);
    box-shadow: inset 0 0 0 100px rgba(0, 145, 204, 0.08);
}

/* Location row — icon only, no pill */
.hero__bio-row--location dt,
[data-theme="light"] .hero__bio-row--location dt {
    width: auto;
    padding: 0;
    border: none;
    border-radius: 0;
    box-shadow: none;
    background: none;
    -webkit-background-clip: unset;
    background-clip: unset;
    -webkit-text-fill-color: unset;
    color: inherit;
    display: flex;
    align-items: center;
}

.hero__bio-row dd {
    color: var(--text-primary);
}

/* ========================================
   Connector Arrows
   ======================================== */

.arrow {
    pointer-events: none;
    color: var(--accent-blue);
    opacity: 0.3;
}

.arrow--left,
.arrow--right {
    position: absolute;
    width: 60px;
    height: 100px;
}

.arrow--left {
    right: 100%;
    top: 50%;
    transform: translateY(-50%);
}

.arrow--right {
    left: 100%;
    top: 50%;
    transform: translateY(-50%);
}

.arrow--down {
    display: block;
    width: 50px;
    margin: -0.25rem auto;
}

@media (max-width: 768px) {
    .arrow {
        display: none;
    }
}

/* ========================================
   Card Base
   ======================================== */

.card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    border-radius: var(--radius);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    text-decoration: none;
    color: var(--text-primary);
    overflow: hidden;
    transition: transform var(--transition),
                box-shadow var(--transition),
                border-color var(--transition);
}

/* Gradient border (hidden by default, shown on hover) */
.card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 2px;
    background: var(--gradient-main);
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    mask-composite: exclude;
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

@media (hover: hover) {
    .card:hover::before {
        opacity: 1;
    }

    .card:hover {
        transform: translateY(-6px) scale(1.02);
        border-color: transparent;
    }
}

.card:active {
    transform: scale(0.98);
}

.card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition);
}

@media (hover: hover) {
    .card:hover .card__icon {
        transform: scale(1.1);
    }
}

.card__label {
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* ========================================
   Card Variants
   ======================================== */

/* LinkedIn */
.card--linkedin {
    --card-color: #0077b5;
}

.card--linkedin::before {
    background: linear-gradient(135deg, #0077b5, var(--accent-blue));
}

.card--linkedin .card__icon {
    color: #0077b5;
}

@media (hover: hover) {
    .card--linkedin:hover {
        box-shadow: 0 0 25px rgba(0, 119, 181, 0.3);
    }
    .card--linkedin:hover .card__icon {
        color: var(--accent-blue);
    }
}

/* Blog / Medium */
.card--blog {
    --card-color: var(--accent-pink);
}

.card--blog::before {
    background: var(--gradient-hot);
}

.card--blog .card__icon {
    color: var(--accent-pink);
}

@media (hover: hover) {
    .card--blog:hover {
        box-shadow: var(--glow-pink);
    }
    .card--blog:hover .card__icon {
        color: #ff6eb4;
    }
}

/* GitHub */
.card--github {
    --card-color: var(--accent-purple);
}

.card--github::before {
    background: var(--gradient-main);
}

.card--github .card__icon {
    color: var(--text-primary);
}

@media (hover: hover) {
    .card--github:hover {
        box-shadow: var(--glow-purple);
    }
    .card--github:hover .card__icon {
        color: var(--accent-blue);
    }
}

/* Vertical cards (LinkedIn, Blog) */
.card--vertical {
    padding: 2rem 1rem;
    min-height: 250px;
}

/* Horizontal card (GitHub) */
.card--horizontal {
    flex-direction: row;
    padding: 1.5rem 2rem;
    gap: 1rem;
}

/* ========================================
   Shimmer / Loading Animation
   ======================================== */

.card__shimmer {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        110deg,
        transparent 25%,
        rgba(255, 255, 255, 0.05) 45%,
        rgba(255, 255, 255, 0.08) 50%,
        rgba(255, 255, 255, 0.05) 55%,
        transparent 75%
    );
    background-size: 250% 100%;
    border-radius: inherit;
    pointer-events: none;
    animation: shimmer 1.8s ease-out forwards;
    animation-play-state: paused;
}

.animate-in.visible .card__shimmer {
    animation-play-state: running;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
        opacity: 1;
    }
    70% {
        background-position: -200% 0;
        opacity: 1;
    }
    100% {
        background-position: -200% 0;
        opacity: 0;
    }
}

/* ========================================
   Entrance Animations
   ======================================== */

.animate-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* Stagger delays */
.card--linkedin.animate-in  { transition-delay: 0.1s; }
.certs.animate-in           { transition-delay: 0.2s; }
.hero.animate-in            { transition-delay: 0.35s; }
.card--blog.animate-in      { transition-delay: 0.5s; }
.card--github.animate-in    { transition-delay: 0.1s; }

/* ========================================
   Footer
   ======================================== */

.footer {
    text-align: center;
    padding: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    border-top: 1px solid var(--glass-border);
}

.footer__links {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    margin-bottom: 0.75rem;
}

.footer__links a {
    color: var(--text-secondary);
    transition: color var(--transition), transform var(--transition);
    -webkit-tap-highlight-color: transparent;
}

@media (hover: hover) {
    .footer__links a:hover {
        color: var(--accent-blue);
        transform: translateY(-2px);
    }
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
    .content {
        padding: 2rem 1rem;
        padding-left: max(1rem, env(safe-area-inset-left));
        padding-right: max(1rem, env(safe-area-inset-right));
    }

    .grid {
        grid-template-columns: 1fr 1fr;
        grid-template-rows: auto auto;
        gap: 1rem;
    }

    .center-stack {
        grid-column: 1 / -1;
        order: -1;
    }

    .card--vertical {
        min-height: 160px;
    }

    .ticker__item {
        font-size: 0.8rem;
        gap: 0.4rem;
    }

    .ticker__item i {
        font-size: 1.2rem;
    }

    .ticker__list {
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .content {
        padding: 1.5rem 1rem;
        padding-bottom: max(1.5rem, env(safe-area-inset-bottom));
    }

    .grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .ticker {
        margin-bottom: 1rem;
    }

    .certs {
        flex-wrap: wrap;
        gap: 0.75rem;
        justify-content: center;
        padding: 0.75rem 1rem;
    }

    .cert {
        font-size: 0.8rem;
    }

    .hero {
        padding: 2rem 1.5rem;
    }

    .hero__photo-wrapper {
        width: 110px;
        height: 110px;
    }

    .hero__bio-row {
        font-size: 0.85rem;
    }

    .hero__bio-row dt {
        width: 5rem;
        font-size: 0.7rem;
        padding: 0.15rem 0.5rem;
    }

    .card--vertical {
        min-height: auto;
        flex-direction: row;
        padding: 1.25rem 1.5rem;
        gap: 1rem;
    }

    .card--vertical .card__icon svg {
        width: 36px;
        height: 36px;
    }

    .card--horizontal {
        padding: 1.25rem 1.5rem;
    }
}

/* ========================================
   Accessibility: Reduced Motion
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .animate-in {
        opacity: 1;
        transform: none;
    }
}