/* ===================================
   CSS VARIABLES
   =================================== */
:root {
    /* Colors */
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #60a5fa;
    --accent: #10b981;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --light: #f8fafc;
    --white: #ffffff;
    --border: #e2e8f0;
    --shadow: rgba(0, 0, 0, 0.1);
    --surface-page: #f3f7fc;
    --surface-card: #ffffff;
    --surface-card-alt: #f8fbff;
    --surface-soft: #eef4fb;
    --surface-border-strong: #dbe5f0;
    --surface-shadow-card: 0 10px 24px rgba(15, 23, 42, 0.06);
    --surface-shadow-hover: 0 18px 40px rgba(15, 23, 42, 0.1);
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 var(--shadow);
    --shadow-md: 0 4px 6px -1px var(--shadow);
    --shadow-lg: 0 10px 15px -3px var(--shadow);
    --shadow-xl: 0 20px 25px -5px var(--shadow);
}

/* Dark Mode Variables */
body.dark-mode {
    --dark: #f8fafc;
    --dark-light: #e2e8f0;
    --gray: #94a3b8;
    --gray-light: #64748b;
    --light: #0f172a;
    --white: #1e293b;
    --border: #334155;
    --shadow: rgba(0, 0, 0, 0.3);
    --surface-page: #0f172a;
    --surface-card: #162033;
    --surface-card-alt: #1b2639;
    --surface-soft: rgba(15, 23, 42, 0.72);
    --surface-border-strong: rgba(148, 163, 184, 0.16);
    --surface-shadow-card: 0 12px 30px rgba(2, 6, 23, 0.2);
    --surface-shadow-hover: 0 18px 40px rgba(2, 6, 23, 0.3);
}

body.dark-mode .experience-column-header,
body.dark-mode .experience-card {
    background: #162033;
}

body.dark-mode .work-header {
    background:
        linear-gradient(135deg, rgba(59, 130, 246, 0.16), transparent 58%),
        #162033;
}

body.dark-mode .education-header {
    background:
        linear-gradient(135deg, rgba(16, 185, 129, 0.16), transparent 58%),
        #162033;
}

body.dark-mode .experience-card-meta span,
body.dark-mode .experience-card-image {
    background: rgba(15, 23, 42, 0.72);
}

body.dark-mode .about-text {
    background:
        radial-gradient(circle at top right, rgba(59, 130, 246, 0.12), transparent 34%),
        #162033;
}

body.dark-mode .about-detail-item {
    background: rgba(15, 23, 42, 0.46);
    border-color: rgba(148, 163, 184, 0.16);
}

body.dark-mode .about-detail-icon {
    background: rgba(37, 99, 235, 0.16);
    color: #60a5fa;
}

.about-text,
.skill-card,
.experience-column-header,
.experience-card,
.project-card,
.contact-info,
.contact-form-wrapper,
.modal-content {
    border: 1px solid var(--surface-border-strong);
    box-shadow: var(--surface-shadow-card);
}

.about-detail-item,
.contact-detail-item,
.social-icons a,
.certification-card {
    border: 1px solid var(--surface-border-strong);
}

body.dark-mode .contact-info {
    background:
        radial-gradient(circle at top left, rgba(59, 130, 246, 0.18), transparent 42%),
        linear-gradient(180deg, rgba(30, 41, 59, 0.92), rgba(15, 23, 42, 0.98));
}

body.dark-mode .contact-form-wrapper {
    background:
        linear-gradient(180deg, rgba(37, 99, 235, 0.08), transparent 24%),
        #162033;
}

body.dark-mode .contact-eyebrow {
    background: rgba(37, 99, 235, 0.18);
    color: #60a5fa;
}

body.dark-mode .contact-detail-item {
    background: rgba(15, 23, 42, 0.46);
    border-color: rgba(148, 163, 184, 0.16);
}

body.dark-mode .contact-detail-item:hover {
    border-color: rgba(96, 165, 250, 0.4);
    box-shadow: 0 8px 24px rgba(2, 6, 23, 0.28);
}

body.dark-mode .contact-icon {
    background: rgba(37, 99, 235, 0.16);
    color: #60a5fa;
}

body.dark-mode .contact-text .label,
body.dark-mode .contact-social-label,
body.dark-mode .contact-form-header p {
    color: #94a3b8;
}

body.dark-mode .contact-socials a {
    background: rgba(37, 99, 235, 0.12);
    border-color: rgba(96, 165, 250, 0.08);
    color: #cbd5e1;
}

body.dark-mode .contact-socials a:hover {
    background: var(--primary);
    color: var(--white);
}

/* ===================================
   RESET & BASE STYLES
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
    transition: background-color var(--transition-base), color var(--transition-base);
}

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

ul {
    list-style: none;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea {
    font-family: inherit;
}

/* ===================================
   UTILITY CLASSES
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.section-description {
    max-width: 42rem;
    margin: 0.75rem auto 0;
    color: var(--gray);
    line-height: 1.7;
}

.section-line {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    margin: 0 auto;
    border-radius: var(--radius-full);
}

/* ===================================
   BUTTONS
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 12px 28px;
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-full {
    width: 100%;
}

/* ===================================
   NAVBAR
   =================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}

.nav-logo {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-weight: 500;
    color: var(--gray);
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 5px;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--light);
    color: var(--dark);
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    background: var(--primary);
    color: var(--white);
}

/* ===================================
   HERO SECTION
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: linear-gradient(135deg, var(--light) 0%, var(--white) 100%);
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: center;
}

.hero-greeting {
    font-size: var(--font-size-xl);
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.hero-name {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title {
    font-size: var(--font-size-2xl);
    color: var(--gray);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.hero-tagline {
    font-size: var(--font-size-lg);
    color: var(--gray-light);
    margin-bottom: var(--spacing-lg);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.hero-socials {
    display: flex;
    gap: var(--spacing-md);
}

.hero-socials a {
    width: 45px;
    height: 45px;
    border-radius: var(--radius-full);
    background: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.hero-socials a:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    width: 350px;
    height: 350px;
    border-radius: var(--radius-full);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    border: 5px solid var(--white);
}

.hero-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator a {
    color: var(--gray);
    font-size: var(--font-size-2xl);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ===================================
   ABOUT SECTION
   =================================== */
.about {
    background:
        linear-gradient(180deg, rgba(37, 99, 235, 0.03), transparent 18%),
        var(--surface-page);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.about-image-wrapper {
    position: relative;
    width: 300px;
    height: 300px;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--surface-shadow-card);
    border: 1px solid var(--surface-border-strong);
    background: var(--surface-card);
}

.about-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-text {
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    background:
        radial-gradient(circle at top right, rgba(37, 99, 235, 0.08), transparent 34%),
        var(--surface-card);
}

.about-eyebrow {
    display: inline-flex;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    padding: 0.45rem 0.85rem;
    border-radius: var(--radius-full);
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.about-text h3 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-xs);
}

.about-title {
    font-size: var(--font-size-lg);
    color: var(--primary);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.about-bio {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.about-section-head {
    margin-bottom: var(--spacing-sm);
}

.about-section-head h4 {
    font-size: var(--font-size-sm);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gray);
}

.about-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.about-detail-item {
    display: flex;
    align-items: flex-start;
    gap: 0.9rem;
    padding: 1rem;
    border-radius: var(--radius-lg);
    background: var(--surface-card-alt);
}

.about-detail-icon {
    width: 46px;
    height: 46px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
}

.about-detail-copy {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.about-detail-item .label {
    font-size: var(--font-size-xs);
    color: var(--gray);
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.about-detail-item .value {
    font-weight: 600;
    color: var(--dark);
    line-height: 1.5;
}

.about-languages {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.language-tag {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.7rem 1rem;
    background: var(--surface-soft);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--gray);
    border: 1px solid var(--surface-border-strong);
}

/* ===================================
   SKILLS SECTION
   =================================== */
.skills {
    background:
        linear-gradient(180deg, rgba(37, 99, 235, 0.03), transparent 18%),
        var(--surface-page);
}

.skills-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-weight: 500;
    color: var(--gray);
    background: var(--surface-card);
    border: 1px solid var(--surface-border-strong);
    transition: all var(--transition-base);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary);
    color: var(--white);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.skill-card {
    background:
        linear-gradient(180deg, var(--surface-card), var(--surface-card-alt));
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--surface-shadow-hover);
    border-color: rgba(37, 99, 235, 0.2);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.skill-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    line-height: 1.4;
}

.skill-level {
    font-size: var(--font-size-sm);
    color: var(--primary);
    font-weight: 600;
}

.skill-bar {
    height: 10px;
    background: var(--surface-soft);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: 0.85rem;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: var(--radius-full);
    transition: width 1s ease;
}

.skill-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
}

.skill-category {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.75rem;
    border-radius: var(--radius-full);
    background: var(--surface-soft);
    color: var(--gray);
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border: 1px solid var(--surface-border-strong);
}

.skills-actions {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-xl);
}

.skills-toggle {
    min-width: 220px;
}

.skills-toggle.is-hidden {
    display: none;
}

/* ===================================
   EXPERIENCE SECTION
   =================================== */
.experience {
    background:
        linear-gradient(180deg, rgba(16, 185, 129, 0.03), transparent 18%),
        var(--surface-page);
}

.experience-layout {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-xl);
    align-items: start;
}

.experience-column {
    display: grid;
    gap: var(--spacing-lg);
}

.experience-column-header {
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
}

.work-header {
    background:
        linear-gradient(135deg, rgba(37, 99, 235, 0.14), transparent 58%),
        var(--surface-card);
}

.education-header {
    background:
        linear-gradient(135deg, rgba(16, 185, 129, 0.14), transparent 58%),
        var(--surface-card);
}

.experience-column-kicker {
    display: inline-block;
    margin-bottom: var(--spacing-sm);
    padding: 0.45rem 0.8rem;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.work-header .experience-column-kicker {
    background: rgba(37, 99, 235, 0.12);
    color: var(--primary);
}

.education-header .experience-column-kicker {
    background: rgba(16, 185, 129, 0.12);
    color: var(--accent);
}

.experience-column-header h3 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--font-size-2xl);
    margin-bottom: 0.5rem;
}

.experience-column-header p {
    color: var(--gray);
    line-height: 1.7;
}

.experience-card-list {
    display: grid;
    gap: var(--spacing-lg);
}

.experience-card {
    padding: var(--spacing-lg);
    border-radius: var(--radius-xl);
    background:
        linear-gradient(180deg, var(--surface-card), var(--surface-card-alt));
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.experience-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--surface-shadow-hover);
}

.work-card {
    border-top: 4px solid var(--primary);
}

.education-card {
    border-top: 4px solid var(--accent);
}

.experience-card-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-md);
}

.work-badge {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
}

.education-badge {
    background: rgba(16, 185, 129, 0.1);
    color: var(--accent);
}

.experience-card-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.45rem;
}

.experience-card-company {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.experience-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: var(--spacing-sm);
}

.experience-card-meta span {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.5rem 0.85rem;
    border-radius: var(--radius-full);
    background: var(--surface-soft);
    color: var(--gray);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.experience-card-description {
    font-size: var(--font-size-sm);
    color: var(--gray);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.experience-card-highlights {
    list-style: none;
    padding: 0;
    display: grid;
    gap: 0.75rem;
}

.experience-card-highlights li {
    font-size: var(--font-size-sm);
    color: var(--dark);
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.experience-card-highlights li i {
    color: var(--accent);
    margin-top: 3px;
    flex-shrink: 0;
}

.experience-card-image {
    width: 104px;
    height: 104px;
    margin-bottom: var(--spacing-md);
    border-radius: 24px;
    overflow: hidden;
    background: var(--surface-soft);
    display: flex;
    align-items: center;
    justify-content: center;
}

.experience-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===================================
   PROJECTS SECTION
   =================================== */
.projects {
    background:
        linear-gradient(180deg, rgba(16, 185, 129, 0.03), transparent 18%),
        var(--surface-page);
}

.projects-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.project-filter-btn {
    padding: 10px 24px;
    border-radius: var(--radius-full);
    font-weight: 500;
    color: var(--gray);
    background: var(--surface-card);
    border: 1px solid var(--surface-border-strong);
    transition: all var(--transition-base);
}

.project-filter-btn:hover,
.project-filter-btn.active {
    background: var(--primary);
    color: var(--white);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background: var(--surface-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--surface-shadow-hover);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem;
    background:
        linear-gradient(180deg, rgba(37, 99, 235, 0.04), rgba(16, 185, 129, 0.02)),
        var(--surface-card-alt);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.03);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(37, 99, 235, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-overlay-btn {
    padding: 10px 20px;
    background: var(--surface-card);
    color: var(--primary);
    border-radius: var(--radius-lg);
    font-weight: 600;
    margin: 0 var(--spacing-xs);
}

.project-info {
    padding: var(--spacing-lg);
}

.project-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.project-description {
    color: var(--gray);
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.tech-tag {
    padding: 6px 12px;
    background: var(--surface-soft);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--gray);
    border: 1px solid var(--surface-border-strong);
}

/* ===================================
   CERTIFICATIONS SECTION
   =================================== */
.certifications {
    background: var(--surface-card);
}

.certifications-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.certification-card {
    background: var(--surface-card-alt);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--primary);
    transition: all var(--transition-base);
}

.certification-card:hover {
    transform: translateX(5px);
    box-shadow: var(--surface-shadow-hover);
}

.certification-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.certification-org {
    color: var(--primary);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.certification-date {
    font-size: var(--font-size-sm);
    color: var(--gray-light);
    margin-bottom: var(--spacing-sm);
}

.certification-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--primary);
    font-weight: 500;
    font-size: var(--font-size-sm);
}

.certification-link:hover {
    text-decoration: underline;
}

/* ===================================
   CONTACT SECTION
   =================================== */
.contact {
    background:
        linear-gradient(180deg, rgba(37, 99, 235, 0.03), transparent 18%),
        var(--surface-page);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: start;
}

.contact-info,
.contact-form-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-xl);
}

.contact-info {
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.14), transparent 42%),
        var(--surface-card);
    padding: var(--spacing-xl);
}

.contact-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: var(--spacing-sm);
    padding: 0.4rem 0.85rem;
    border-radius: var(--radius-full);
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    font-size: var(--font-size-xs);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.contact-info h3 {
    font-size: var(--font-size-3xl);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

.contact-description {
    color: var(--gray);
    max-width: 34rem;
    margin-bottom: var(--spacing-lg);
}

.contact-details {
    display: grid;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.contact-detail-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: 1rem 1.1rem;
    border-radius: var(--radius-lg);
    background: var(--surface-card-alt);
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.contact-detail-item:hover {
    transform: translateY(-2px);
    border-color: rgba(37, 99, 235, 0.28);
    box-shadow: var(--surface-shadow-card);
}

.contact-icon {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: var(--font-size-xl);
}

.contact-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    min-width: 0;
}

.contact-text .label {
    font-size: var(--font-size-xs);
    color: var(--gray);
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.contact-text .value {
    font-weight: 600;
    color: var(--dark);
    font-size: var(--font-size-lg);
    line-height: 1.4;
    word-break: break-word;
}

.contact-text a.value:hover {
    color: var(--primary);
}

.contact-social-label {
    margin-bottom: var(--spacing-sm);
    color: var(--gray);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.contact-socials {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.contact-socials a {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: rgba(37, 99, 235, 0.08);
    border: 1px solid var(--surface-border-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
    font-size: var(--font-size-xl);
    transition: all var(--transition-base);
}

.contact-socials a:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
    border-color: rgba(37, 99, 235, 0.2);
}

.contact-form-wrapper {
    background:
        linear-gradient(180deg, rgba(37, 99, 235, 0.05), transparent 26%),
        var(--surface-card);
    padding: var(--spacing-xl);
}

.contact-form-header {
    margin-bottom: var(--spacing-lg);
}

.contact-form-header h3 {
    margin-bottom: 0.35rem;
    font-size: var(--font-size-2xl);
}

.contact-form-header p {
    color: var(--gray);
}

.contact-form {
    display: grid;
    gap: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--dark);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.9rem 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
    background: var(--surface-soft);
    color: var(--dark);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-light);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.form-honeypot {
    display: none !important;
}

.form-status {
    display: none;
    margin-top: var(--spacing-md);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.form-status.show {
    display: block;
}

.form-status.success {
    background: rgba(16, 185, 129, 0.12);
    color: #047857;
    border: 1px solid rgba(16, 185, 129, 0.28);
}

.form-status.error {
    background: rgba(239, 68, 68, 0.12);
    color: #b91c1c;
    border: 1px solid rgba(239, 68, 68, 0.24);
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--surface-page);
    color: var(--dark);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 2px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xs);
    color: var(--primary);
}

.footer-brand p {
    color: var(--gray);
}

.footer-socials h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--dark);
}

.social-icons {
    display: flex;
    gap: var(--spacing-md);
}

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--surface-card);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray);
    transition: all var(--transition-base);
    border: 1px solid var(--surface-border-strong);
}

.social-icons a:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

.footer-bottom p {
    color: var(--gray);
}

/* ===================================
   MODAL
   =================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--surface-card);
    border-radius: var(--radius-lg);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background: var(--light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    z-index: 10;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: var(--primary);
    color: var(--white);
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-image {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.modal-image img {
    width: 100%;
    height: auto;
}

.modal-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.modal-description {
    color: var(--gray);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.modal-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.modal-links {
    display: flex;
    gap: var(--spacing-md);
}

/* ===================================
   BACK TO TOP BUTTON
   =================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: var(--radius-full);
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}