/* ============================================
   CSS Custom Properties — Apple-inspired
   ============================================ */
:root {
    --color-bg: #f5f5f7;
    --color-surface: #ffffff;
    --color-surface-alt: #f9f9fb;
    --color-primary: #1d1d1f;
    --color-secondary: #6e6e73;
    --color-accent: #0071e3;
    --color-accent-hover: #0077ed;
    --color-accent-subtle: rgba(0, 113, 227, 0.08);
    --color-text: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-text-muted: #86868b;
    --color-border: rgba(0, 0, 0, 0.08);
    --color-card-shadow: rgba(0, 0, 0, 0.04);
    --color-card-hover-shadow: rgba(0, 0, 0, 0.1);
    --color-hero-bg: #1d1d1f;

    /* Glass */
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(0, 0, 0, 0.06);
    --glass-blur: 20px;

    /* Typography */
    --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', sans-serif;

    /* Sizing */
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 22px;
    --radius-xl: 28px;
    --transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* Dark mode */
body.dark-mode {
    --color-bg: #000000;
    --color-surface: #1c1c1e;
    --color-surface-alt: #2c2c2e;
    --color-primary: #f5f5f7;
    --color-secondary: #a1a1a6;
    --color-text: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-text-muted: #86868b;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-card-shadow: rgba(0, 0, 0, 0.2);
    --color-card-hover-shadow: rgba(0, 0, 0, 0.35);
    --color-hero-bg: #000000;
    --glass-bg: rgba(28, 28, 30, 0.78);
    --glass-border: rgba(255, 255, 255, 0.06);
    --color-accent-subtle: rgba(0, 113, 227, 0.15);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Scroll Progress Bar
   ============================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--color-accent);
    width: 0%;
    z-index: 10000;
    transition: width 0.1s linear;
}

/* ============================================
   Sticky Navigation
   ============================================ */
.sticky-nav {
    position: fixed;
    top: -70px;
    left: 0;
    right: 0;
    z-index: 9999;
    background: var(--glass-bg);
    backdrop-filter: saturate(180%) blur(var(--glass-blur));
    -webkit-backdrop-filter: saturate(180%) blur(var(--glass-blur));
    border-bottom: 1px solid var(--glass-border);
    transition: top var(--transition);
}

.sticky-nav.visible {
    top: 0;
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 2rem;
}

.nav-brand {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--color-text);
}

.nav-links {
    display: flex;
    gap: 0.15rem;
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 500;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-text);
    background: var(--color-accent-subtle);
}

.dark-mode-toggle {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.dark-mode-toggle:hover {
    color: var(--color-text);
    background: var(--color-surface-alt);
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: 980px;
    margin: 0 auto;
    background: var(--color-surface);
    box-shadow: 0 0 0 1px var(--color-border), 0 20px 50px var(--color-card-shadow);
    border-radius: var(--radius-xl);
    overflow: hidden;
    margin-top: 2rem;
    margin-bottom: 2rem;
}

/* ============================================
   Hero / Header
   ============================================ */
.header {
    background: var(--color-hero-bg);
    color: #f5f5f7;
    padding: 4rem 3rem 3rem;
    position: relative;
    overflow: hidden;
}

/* Subtle gradient overlay only */
.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 80% 60% at 50% 100%, rgba(255, 255, 255, 0.03), transparent);
}

/* Floating shapes — very subtle */
.hero-bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.02);
}

.shape-1 {
    width: 400px;
    height: 400px;
    top: -150px;
    right: -100px;
    animation: float1 20s ease-in-out infinite;
}

.shape-2 {
    width: 250px;
    height: 250px;
    bottom: -80px;
    left: -50px;
    animation: float2 16s ease-in-out infinite;
}

.shape-3 {
    width: 180px;
    height: 180px;
    top: 50%;
    right: 25%;
    animation: float3 22s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-20px, 15px); }
}

@keyframes float2 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(15px, -20px); }
}

@keyframes float3 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-10px, -10px); }
}

.header-content {
    position: relative;
    z-index: 1;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.profile-section {
    display: flex;
    align-items: center;
    gap: 2rem;
}

/* Profile image — clean ring */
.profile-image {
    width: 110px;
    height: 110px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 3px;
    flex-shrink: 0;
}

.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    transition: transform var(--transition);
}

.profile-photo:hover {
    transform: scale(1.03);
}

/* Hero typography — clean, no gradient text */
.profile-info h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 4.5vw, 3.2rem);
    font-weight: 800;
    margin-bottom: 0.4rem;
    color: #f5f5f7;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.profile-info h2 {
    font-family: var(--font-body);
    font-size: clamp(0.95rem, 1.8vw, 1.15rem);
    font-weight: 400;
    color: rgba(245, 245, 247, 0.6);
    line-height: 1.4;
    letter-spacing: 0;
}

/* Contact info — horizontal row */
.contact-info {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 0.85rem;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    font-size: 0.85rem;
}

.contact-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-1px);
}

.contact-item i {
    font-size: 0.8rem;
    color: rgba(245, 245, 247, 0.45);
    min-width: 14px;
}

.contact-item span,
.contact-item a {
    color: rgba(245, 245, 247, 0.8);
    text-decoration: none;
    transition: color var(--transition);
}

.contact-item a:hover {
    color: #f5f5f7;
}

/* Stats row — spacious horizontal layout */
.stats-row {
    display: flex;
    gap: 0;
    flex-wrap: wrap;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    flex: 1;
    min-width: 120px;
    padding: 0 1rem;
    position: relative;
}

.stat-item + .stat-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 15%;
    bottom: 15%;
    width: 1px;
    background: rgba(255, 255, 255, 0.08);
}

.stat-value {
    display: inline-flex;
    align-items: baseline;
    white-space: nowrap;
}

.stat-value span {
    display: inline;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: #f5f5f7;
    line-height: 1;
}

.stat-suffix,
.stat-prefix {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    color: #f5f5f7;
    line-height: 1;
}

.stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: rgba(245, 245, 247, 0.4);
    font-weight: 500;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    padding: 3rem 3rem;
}

.section {
    margin-bottom: 3.5rem;
}

/* Section titles */
.section-title {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 1.75rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
    letter-spacing: -0.01em;
}

.section-title::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
    transform-origin: left;
}

.section-title i {
    color: var(--color-text-muted);
    font-size: 1rem;
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-alt);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.section-title.revealed::after {
    animation: lineGrow 0.6s ease-out forwards;
}

@keyframes lineGrow {
    from { transform: scaleX(0); }
    to { transform: scaleX(1); }
}

/* ============================================
   Executive Summary
   ============================================ */
.summary-text {
    font-size: 1.05rem;
    line-height: 1.85;
    color: var(--color-text-secondary);
    padding: 2rem;
    background: var(--color-surface-alt);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-border);
}

/* ============================================
   Achievement Cards — Clean, minimal
   ============================================ */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.achievement-card {
    background: var(--color-surface);
    padding: 1.75rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.achievement-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.achievement-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px var(--color-card-hover-shadow);
}

.achievement-card:hover::before {
    transform: scaleX(1);
}

/* Clean monochrome icon backgrounds */
.achievement-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    background: var(--color-surface-alt);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

.icon-ai,
.icon-global,
.icon-cloud,
.icon-data,
.icon-devops,
.icon-cost {
    background: var(--color-surface-alt);
    color: var(--color-text-secondary);
}

.achievement-card h4 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.achievement-card p {
    color: var(--color-text-secondary);
    line-height: 1.65;
    font-size: 0.9rem;
}

/* ============================================
   Experience Timeline
   ============================================ */
.experience-timeline {
    position: relative;
    padding-left: 2rem;
}

.experience-timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--color-border);
}

.experience-item {
    position: relative;
    margin-bottom: 2.5rem;
    padding-left: 2.5rem;
    transition: transform var(--transition);
}

.experience-item::before {
    content: '';
    position: absolute;
    left: -5px;
    top: 6px;
    width: 12px;
    height: 12px;
    background: var(--color-surface);
    border-radius: 50%;
    border: 2px solid var(--color-text-muted);
    transition: border-color var(--transition);
}

.experience-item:hover::before {
    border-color: var(--color-accent);
}

.experience-date {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-bottom: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.experience-content h4 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.25rem;
    letter-spacing: -0.01em;
}

.experience-content h5 {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: 0.6rem;
}

.experience-content p {
    color: var(--color-text-secondary);
    line-height: 1.65;
    font-size: 0.9rem;
}

/* ============================================
   Technical Leadership
   ============================================ */
.tech-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.tech-category {
    background: var(--color-surface-alt);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.tech-category:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--color-card-shadow);
}

.tech-category h4 {
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tech-tag {
    background: var(--color-surface);
    color: var(--color-text-secondary);
    padding: 0.3rem 0.7rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all var(--transition);
    border: 1px solid var(--color-border);
}

.tech-tag:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    transform: translateY(-1px);
}

/* ============================================
   Education Grid
   ============================================ */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1rem;
}

.education-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--color-surface);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.education-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--color-card-shadow);
}

.education-item > i {
    font-size: 1.4rem;
    color: var(--color-text-muted);
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-alt);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    flex-shrink: 0;
}

.education-item h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 0.2rem;
}

.education-item p {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-surface-alt);
    color: var(--color-text-muted);
    text-align: center;
    padding: 1.25rem 2rem;
    font-size: 0.8rem;
    border-top: 1px solid var(--color-border);
}

/* ============================================
   Animation Utility Classes
   ============================================ */
.fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

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

.stagger-1 { transition-delay: 0.04s; }
.stagger-2 { transition-delay: 0.08s; }
.stagger-3 { transition-delay: 0.12s; }
.stagger-4 { transition-delay: 0.16s; }
.stagger-5 { transition-delay: 0.2s; }
.stagger-6 { transition-delay: 0.24s; }

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .container {
        margin: 0.75rem;
        border-radius: var(--radius-lg);
    }

    .header {
        padding: 2.5rem 1.5rem 2rem;
    }

    .profile-section {
        flex-direction: column;
        text-align: center;
    }

    .profile-image {
        width: 90px;
        height: 90px;
    }

    .contact-info {
        justify-content: center;
    }

    .stats-row {
        justify-content: center;
        gap: 0.5rem;
    }

    .stat-item {
        min-width: 80px;
        padding: 0 0.5rem;
    }

    .stat-item + .stat-item::before {
        display: none;
    }

    .stat-number,
    .stat-prefix,
    .stat-suffix {
        font-size: 1.2rem;
    }

    .main-content {
        padding: 2rem 1.5rem;
    }

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

    .tech-categories {
        grid-template-columns: 1fr;
    }

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

    .experience-timeline {
        padding-left: 1rem;
    }

    .experience-item {
        padding-left: 2rem;
    }

    .nav-links {
        display: none;
    }

    .nav-inner {
        padding: 0.6rem 1.25rem;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 2rem 1rem 1.5rem;
    }

    .profile-info h2 {
        font-size: 0.9rem;
    }

    .contact-item {
        font-size: 0.78rem;
        padding: 0.4rem 0.65rem;
    }

    .stat-number,
    .stat-prefix,
    .stat-suffix {
        font-size: 1.1rem;
    }

    .achievement-card,
    .tech-category,
    .education-item {
        padding: 1.25rem;
    }

    .section-title {
        font-size: 1.3rem;
    }

    .summary-text {
        padding: 1.25rem;
        font-size: 0.95rem;
    }

    .main-content {
        padding: 1.5rem 1rem;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    body {
        background: white;
        color: #000;
    }

    .scroll-progress,
    .sticky-nav,
    .dark-mode-toggle,
    .hero-bg-shapes {
        display: none !important;
    }

    .container {
        box-shadow: none;
        margin: 0;
        border-radius: 0;
    }

    .header {
        background: #1d1d1f !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
        padding: 2rem;
    }

    .achievement-card,
    .education-item {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }

    .section {
        break-inside: avoid;
    }

    .fade-up {
        opacity: 1 !important;
        transform: none !important;
    }

    .stat-number,
    .stat-prefix,
    .stat-suffix {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
}