/* ===== CSS RESET ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===== CUSTOM SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 5px;
}
::-webkit-scrollbar-track {
    background: #0F0F23;
}
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, #00D9FF, #0066FF);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #00D9FF, #FF3366);
}

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary-color: #00D9FF;
    --secondary-color: #0066FF;
    --accent-color: #FF3366;
    --success-color: #22c55e;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #00D9FF 0%, #0066FF 100%);
    --gradient-accent: linear-gradient(135deg, #FF3366 0%, #FF6B9D 100%);
    --gradient-dark: linear-gradient(135deg, #0F0F23 0%, #1A1A2E 100%);

    /* Neutrals */
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --gray: #6C757D;
    --dark-gray: #343A40;
    --black: #000000;
    --dark-bg: #0F0F23;
    --darker-bg: #0A0A1A;
    --card-bg: rgba(255, 255, 255, 0.03);

    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;

    /* Font Weights */
    --fw-light: 300;
    --fw-regular: 400;
    --fw-medium: 500;
    --fw-semibold: 600;
    --fw-bold: 700;

    /* Font Sizes */
    --fs-xs: 0.75rem;
    --fs-sm: 0.875rem;
    --fs-base: 1rem;
    --fs-lg: 1.125rem;
    --fs-xl: 1.25rem;
    --fs-2xl: 1.5rem;
    --fs-3xl: 1.875rem;
    --fs-4xl: 2.25rem;
    --fs-5xl: 3rem;
    --fs-6xl: 3.75rem;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-base: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Borders */
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 1.5rem;
    --border-radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 30px rgba(0, 217, 255, 0.35);
    --shadow-glow-accent: 0 0 30px rgba(255, 51, 102, 0.35);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* ===== BASE STYLES ===== */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--fw-regular);
    line-height: 1.6;
    color: var(--white);
    background: var(--darker-bg);
    overflow-x: hidden;
}

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

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-xl);
    }
}

.text-gradient {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section__header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.section__tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: var(--primary-color);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--space-base);
    padding: 4px 14px;
    background: rgba(0, 217, 255, 0.07);
    border: 1px solid rgba(0, 217, 255, 0.2);
    border-radius: var(--border-radius-full);
}

.section__title {
    font-size: var(--fs-4xl);
    font-weight: var(--fw-bold);
    margin-bottom: var(--space-base);
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.15;
}

.section__subtitle {
    font-size: var(--fs-base);
    color: rgba(255, 255, 255, 0.45);
    max-width: 580px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 14px 28px;
    font-family: inherit;
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.04em;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 35%, rgba(255, 255, 255, 0.18) 50%, transparent 65%);
    transform: translateX(-100%);
    transition: transform 0.55s ease;
}

.btn:hover::after {
    transform: translateX(100%);
}

.btn--primary {
    background: var(--gradient-secondary);
    color: var(--white);
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.4);
}

.btn--primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0, 217, 255, 0.5);
}

.btn--secondary {
    background: transparent;
    color: var(--primary-color);
    border: 1.5px solid rgba(0, 217, 255, 0.5);
}

.btn--secondary:hover {
    background: rgba(0, 217, 255, 0.08);
    border-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 217, 255, 0.2);
}

.btn--full {
    width: 100%;
    justify-content: center;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(10, 10, 26, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 217, 255, 0.08);
    z-index: var(--z-fixed);
    transition: all var(--transition-base);
}

.header.scroll-header {
    background: rgba(10, 10, 26, 0.95);
    border-bottom-color: rgba(0, 217, 255, 0.12);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-base) var(--space-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.header__brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header__logo {
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius-full);
    object-fit: cover;
    border: 2px solid rgba(0, 217, 255, 0.35);
    transition: border-color var(--transition-base);
}

.header__logo:hover {
    border-color: var(--primary-color);
}

.header__name {
    font-size: var(--fs-base);
    font-weight: var(--fw-bold);
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.02em;
}

.header__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(0, 217, 255, 0.05);
    border: 1px solid rgba(0, 217, 255, 0.15);
    border-radius: var(--border-radius);
    color: var(--white);
    font-size: var(--fs-xl);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.header__toggle:hover {
    color: var(--primary-color);
    background: rgba(0, 217, 255, 0.1);
    border-color: rgba(0, 217, 255, 0.4);
}

/* ===== LANGUAGE TOGGLE ===== */
.lang-toggle {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    height: 40px;
    padding: 0 12px;
    background: rgba(0, 217, 255, 0.05);
    border: 1px solid rgba(0, 217, 255, 0.15);
    border-radius: var(--border-radius);
    color: rgba(255, 255, 255, 0.55);
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.lang-toggle:hover {
    background: rgba(0, 217, 255, 0.1);
    border-color: rgba(0, 217, 255, 0.4);
}

.lang-toggle:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
}

.lang-toggle__label {
    color: rgba(255, 255, 255, 0.35);
    transition: color var(--transition-fast);
}

.lang-toggle__label--active {
    color: var(--primary-color);
}

.lang-toggle__separator {
    color: rgba(255, 255, 255, 0.2);
    font-size: 0.65rem;
}

/* ===== NAVIGATION ===== */
.nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(10, 10, 26, 0.98);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-left: 1px solid rgba(0, 217, 255, 0.08);
    padding: var(--space-2xl) var(--space-lg);
    transition: right var(--transition-base);
    z-index: var(--z-modal);
}

.nav.show-menu {
    right: 0;
}

.nav__close {
    position: absolute;
    top: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(0, 217, 255, 0.05);
    border: 1px solid rgba(0, 217, 255, 0.15);
    border-radius: var(--border-radius);
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--fs-xl);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.nav__close:hover {
    color: var(--primary-color);
    border-color: rgba(0, 217, 255, 0.4);
    background: rgba(0, 217, 255, 0.1);
}

.nav__list {
    list-style: none;
    margin-top: var(--space-2xl);
}

.nav__item {
    margin-bottom: 4px;
}

.nav__link {
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: var(--fs-base);
    font-weight: var(--fw-medium);
    padding: 12px var(--space-base);
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
    position: relative;
    gap: 10px;
}

.nav__link::before {
    content: '';
    width: 3px;
    height: 0;
    background: var(--gradient-secondary);
    border-radius: 2px;
    transition: height var(--transition-base);
    flex-shrink: 0;
}

.nav__link:hover {
    color: var(--primary-color);
    background: rgba(0, 217, 255, 0.06);
    transform: translateX(6px);
}

.nav__link:hover::before {
    height: 18px;
}

/* Desktop Navigation */
@media (min-width: 768px) {
    .header__toggle {
        display: none;
    }

    .nav {
        position: static;
        width: auto;
        height: auto;
        background: none;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        border: none;
        padding: 0;
    }

    .nav__close {
        display: none;
    }

    .nav__list {
        display: flex;
        align-items: center;
        margin: 0;
        gap: 2px;
    }

    .nav__item {
        margin: 0;
    }

    .nav__link {
        font-size: var(--fs-sm);
        padding: 8px 14px;
        color: rgba(255, 255, 255, 0.65);
        border-radius: var(--border-radius);
        gap: 0;
    }

    .nav__link::before {
        display: none;
    }

    .nav__link:hover {
        transform: none;
        background: rgba(0, 217, 255, 0.08);
        color: var(--primary-color);
    }
}

/* ===== HERO SECTION ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
    background: var(--dark-bg);
}

/* ===== AURORA BACKGROUND ===== */
.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
    overflow: hidden;
}

.hero__orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
}

.hero__orb--1 {
    width: 55vw;
    height: 55vw;
    max-width: 650px;
    max-height: 650px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.18) 0%, transparent 70%);
    top: -15%;
    left: -10%;
    animation: orbFloat1 13s ease-in-out infinite;
}

.hero__orb--2 {
    width: 45vw;
    height: 45vw;
    max-width: 550px;
    max-height: 550px;
    background: radial-gradient(circle, rgba(255, 51, 102, 0.12) 0%, transparent 70%);
    bottom: -10%;
    right: -5%;
    animation: orbFloat2 11s ease-in-out infinite;
}

.hero__orb--3 {
    width: 35vw;
    height: 35vw;
    max-width: 450px;
    max-height: 450px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.18) 0%, transparent 70%);
    top: 45%;
    left: 38%;
    animation: orbFloat3 15s ease-in-out infinite;
}

@keyframes orbFloat1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(35px, 25px) scale(1.07); }
}

@keyframes orbFloat2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-28px, -35px) scale(1.05); }
}

@keyframes orbFloat3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.18); }
}

/* Tech Grid Overlay */
.hero__bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 217, 255, 0.022) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 217, 255, 0.022) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero__container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3xl);
    position: relative;
    z-index: 1;
}

.hero__content {
    flex: 1;
    text-align: center;
}

@media (min-width: 968px) {
    .hero__content {
        text-align: left;
        max-width: 580px;
    }
}

/* Available for hire badge */
.hero__badge-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(34, 197, 94, 0.07);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: var(--border-radius-full);
    padding: 6px 16px;
    margin-bottom: var(--space-lg);
}

.hero__status-dot {
    width: 7px;
    height: 7px;
    background: var(--success-color);
    border-radius: 50%;
    flex-shrink: 0;
    animation: statusPulse 2s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5); }
    50% { box-shadow: 0 0 0 5px rgba(34, 197, 94, 0); }
}

.hero__badge-text {
    font-size: var(--fs-xs);
    color: var(--success-color);
    font-weight: var(--fw-semibold);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

.hero__greeting {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--fs-sm);
    color: var(--primary-color);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.08em;
    opacity: 0.85;
}

.hero__name {
    display: block;
    font-size: clamp(var(--fs-4xl), 8vw, var(--fs-6xl));
    font-weight: var(--fw-bold);
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-base);
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.hero__subtitle {
    font-size: clamp(var(--fs-xl), 3vw, var(--fs-2xl));
    color: rgba(255, 255, 255, 0.8);
    font-weight: var(--fw-medium);
    margin-bottom: var(--space-lg);
    min-height: 2.5rem;
    display: flex;
    align-items: center;
    gap: 2px;
    justify-content: center;
}

@media (min-width: 968px) {
    .hero__subtitle {
        justify-content: flex-start;
    }
}

.hero__cursor {
    color: var(--primary-color);
    font-weight: var(--fw-light);
    animation: cursorBlink 0.7s step-end infinite;
    margin-left: 1px;
}

@keyframes cursorBlink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero__description {
    font-size: var(--fs-base);
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: var(--space-2xl);
    max-width: 520px;
    line-height: 1.85;
}

@media (max-width: 967px) {
    .hero__description {
        margin-left: auto;
        margin-right: auto;
    }
}

.hero__cta {
    display: flex;
    flex-direction: column;
    gap: var(--space-base);
    align-items: center;
}

@media (min-width: 640px) {
    .hero__cta {
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 968px) {
    .hero__cta {
        justify-content: flex-start;
    }
}

/* Hero Visual (photo) */
.hero__visual {
    display: none;
    flex: 0 0 auto;
}

@media (min-width: 968px) {
    .hero__visual {
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

.hero__image-wrapper {
    position: relative;
    width: 290px;
    height: 350px;
}

/* Rotating conic border */
.hero__image-wrapper::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: calc(var(--border-radius-xl) + 3px);
    background: conic-gradient(from 0deg, #00D9FF, #0066FF 30%, #FF3366 60%, #667eea 80%, #00D9FF);
    animation: ringRotate 5s linear infinite;
    z-index: 0;
}

/* Mask layer */
.hero__image-wrapper::after {
    content: '';
    position: absolute;
    inset: 3px;
    border-radius: var(--border-radius-xl);
    background: var(--dark-bg);
    z-index: 1;
}

.hero__photo {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    border-radius: var(--border-radius-xl);
}

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

/* Hero scroll indicator */
.hero__scroll {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}

.hero__scroll-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: rgba(255, 255, 255, 0.3);
    text-decoration: none;
    font-size: 10px;
    font-family: var(--font-mono);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transition: color var(--transition-base);
    animation: scrollBounce 2.5s ease-in-out infinite;
}

.hero__scroll-link:hover {
    color: var(--primary-color);
}

@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-7px); }
}

/* ===== ABOUT SECTION ===== */
.about {
    padding: var(--space-4xl) 0;
    background: linear-gradient(180deg, var(--dark-bg) 0%, #111128 100%);
    position: relative;
    overflow: hidden;
}

.about::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 217, 255, 0.018) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 217, 255, 0.018) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.about__content {
    display: grid;
    gap: var(--space-3xl);
    align-items: start;
    position: relative;
}

@media (min-width: 968px) {
    .about__content {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4xl);
    }
}

.about__info-title,
.about__skills-title {
    font-size: var(--fs-2xl);
    font-weight: var(--fw-bold);
    margin-bottom: var(--space-xl);
    color: var(--white);
    letter-spacing: -0.01em;
}

.about__text p {
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: var(--space-lg);
    line-height: 1.85;
    font-size: var(--fs-base);
}

.about__text strong {
    color: rgba(255, 255, 255, 0.9);
    font-weight: var(--fw-semibold);
}

.about__cv-btn {
    margin-top: var(--space-xl);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
}

/* ===== SKILLS ===== */
.skills__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
}

@media (min-width: 480px) {
    .skills__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.skill__item {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg) var(--space-xs);
    text-align: center;
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: rgba(255, 255, 255, 0.55);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: default;
    letter-spacing: 0.04em;
}

.skill__icon {
    font-size: 1.35rem;
    color: var(--primary-color);
    transition: all var(--transition-base);
    display: block;
    opacity: 0.8;
}

.skill__item:hover {
    background: rgba(0, 217, 255, 0.06);
    border-color: rgba(0, 217, 255, 0.25);
    color: rgba(255, 255, 255, 0.9);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 217, 255, 0.12);
}

.skill__item:hover .skill__icon {
    opacity: 1;
    transform: scale(1.2);
    filter: drop-shadow(0 0 8px rgba(0, 217, 255, 0.7));
}

/* Shine sweep */
.skill__item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 217, 255, 0.07), transparent);
    transition: left 0.55s ease;
}

.skill__item:hover::before {
    left: 100%;
}

/* ===== CERTIFICATIONS ===== */
.certifications {
    margin-top: var(--space-3xl);
}

.certifications__title {
    font-size: var(--fs-2xl);
    font-weight: var(--fw-bold);
    color: var(--white);
    margin-bottom: var(--space-xl);
    letter-spacing: -0.01em;
}

.certifications__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-sm);
}

@media (min-width: 640px) {
    .certifications__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 968px) {
    .certifications__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.cert__card {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--border-radius-lg);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    transition: border-color var(--transition-base), transform var(--transition-base);
}

.cert__card:hover {
    border-color: rgba(0, 217, 255, 0.3);
    transform: translateY(-2px);
}

.cert__icon-wrap {
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.12), rgba(0, 102, 255, 0.12));
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.cert__icon {
    font-size: 1.1rem;
    color: var(--primary-color);
}

.cert__info {
    flex: 1;
}

.cert__name {
    font-size: var(--fs-sm);
    font-weight: var(--fw-semibold);
    color: var(--white);
    margin-bottom: 0.25rem;
    line-height: 1.35;
}

.cert__institution {
    font-size: var(--fs-xs);
    color: rgba(255, 255, 255, 0.4);
    font-family: var(--font-mono);
}

.cert__actions {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--space-xs);
}

.cert__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.35rem 0.75rem;
    border-radius: var(--border-radius-md);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    text-decoration: none;
    transition: all var(--transition-base);
    letter-spacing: 0.03em;
}

.cert__btn--view {
    background: rgba(0, 217, 255, 0.1);
    color: var(--primary-color);
    border: 1px solid rgba(0, 217, 255, 0.2);
}

.cert__btn--view:hover {
    background: rgba(0, 217, 255, 0.2);
    border-color: rgba(0, 217, 255, 0.5);
}

.cert__btn--dl {
    background: rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.cert__btn--dl:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.25);
}

/* ===== PROJECTS SECTION ===== */
.projects {
    padding: var(--space-4xl) 0;
    background: var(--dark-bg);
    position: relative;
    overflow: hidden;
}

.projects::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 217, 255, 0.018) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 217, 255, 0.018) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.projects__grid {
    display: grid;
    gap: var(--space-xl);
    position: relative;
}

@media (min-width: 768px) {
    .projects__grid {
        grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    }
}

.project__card {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    position: relative;
}

/* Top gradient accent line on hover */
.project__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-secondary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
    z-index: 2;
}

.project__card:hover::before {
    transform: scaleX(1);
}

.project__card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 35px rgba(0, 217, 255, 0.08);
    border-color: rgba(0, 217, 255, 0.2);
}

.project__image {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16/10;
}

.project__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project__card:hover .project__image img {
    transform: scale(1.07);
}

.project__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 10, 26, 0.88);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
}

.project__card:hover .project__overlay {
    opacity: 1;
}

.project__links {
    display: flex;
    gap: var(--space-base);
}

.project__link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: var(--gradient-secondary);
    color: var(--white);
    border-radius: var(--border-radius-full);
    text-decoration: none;
    font-size: var(--fs-lg);
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(0, 102, 255, 0.5);
}

.project__link:hover {
    transform: scale(1.12);
    box-shadow: 0 8px 25px rgba(0, 217, 255, 0.5);
}

.project__content {
    padding: var(--space-xl);
}

.project__title {
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    color: var(--white);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.01em;
}

.project__description {
    color: rgba(255, 255, 255, 0.45);
    margin-bottom: var(--space-lg);
    line-height: 1.75;
    font-size: var(--fs-sm);
}

.project__tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tech__tag {
    background: rgba(0, 217, 255, 0.07);
    color: rgba(0, 217, 255, 0.85);
    font-size: 11px;
    font-weight: var(--fw-semibold);
    padding: 4px 11px;
    border-radius: var(--border-radius-full);
    border: 1px solid rgba(0, 217, 255, 0.18);
    font-family: var(--font-mono);
    letter-spacing: 0.04em;
    transition: all var(--transition-fast);
}

.project__card:hover .tech__tag {
    background: rgba(0, 217, 255, 0.1);
    border-color: rgba(0, 217, 255, 0.28);
}

/* ===== CONTACT SECTION ===== */
.contact {
    padding: var(--space-4xl) 0;
    background: linear-gradient(180deg, #111128 0%, var(--darker-bg) 100%);
}

.contact__wrapper {
    display: grid;
    gap: var(--space-3xl);
    max-width: 980px;
    margin: 0 auto;
}

@media (min-width: 968px) {
    .contact__wrapper {
        grid-template-columns: 1fr 1.5fr;
        align-items: start;
        gap: var(--space-4xl);
    }
}

.contact__info {
    padding: var(--space-sm) 0;
}

.contact__info-title {
    font-size: var(--fs-3xl);
    font-weight: var(--fw-bold);
    color: var(--white);
    margin-bottom: var(--space-base);
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.contact__info-text {
    color: rgba(255, 255, 255, 0.45);
    line-height: 1.85;
    margin-bottom: var(--space-2xl);
    font-size: var(--fs-sm);
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact__detail-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-base);
}

.contact__detail-icon {
    width: 40px;
    height: 40px;
    background: rgba(0, 217, 255, 0.07);
    border: 1px solid rgba(0, 217, 255, 0.18);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: var(--fs-base);
    flex-shrink: 0;
}

.contact__detail-body {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-top: 2px;
}

.contact__detail-label {
    font-size: 10px;
    color: rgba(255, 255, 255, 0.35);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: var(--fw-semibold);
    font-family: var(--font-mono);
}

.contact__detail-value {
    font-size: var(--fs-sm);
    color: rgba(255, 255, 255, 0.8);
    font-weight: var(--fw-medium);
}

.contact__form {
    background: var(--card-bg);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--border-radius-lg);
    padding: var(--space-2xl);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.form__group {
    margin-bottom: var(--space-xl);
}

.form__label {
    display: block;
    color: rgba(255, 255, 255, 0.65);
    font-weight: var(--fw-medium);
    margin-bottom: var(--space-xs);
    font-size: var(--fs-xs);
    letter-spacing: 0.07em;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

.form__input,
.form__textarea {
    width: 100%;
    padding: 12px var(--space-base);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: var(--border-radius);
    color: var(--white);
    font-family: inherit;
    font-size: var(--fs-sm);
    transition: all var(--transition-base);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: rgba(0, 217, 255, 0.45);
    background: rgba(0, 217, 255, 0.03);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.07);
}

.form__input::placeholder,
.form__textarea::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.form__textarea {
    resize: vertical;
    min-height: 130px;
    font-family: inherit;
}

/* Form Messages */
.form-message {
    padding: var(--space-base);
    border-radius: var(--border-radius);
    margin-top: var(--space-base);
    font-weight: var(--fw-medium);
    text-align: center;
    font-size: var(--fs-sm);
}

.form-message--success {
    background: rgba(34, 197, 94, 0.07);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.form-message--error {
    background: rgba(239, 68, 68, 0.07);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.form-message--info {
    background: rgba(59, 130, 246, 0.07);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--darker-bg);
    border-top: 1px solid rgba(0, 217, 255, 0.07);
    padding: var(--space-2xl) 0 var(--space-base);
}

.footer__content {
    display: grid;
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

@media (min-width: 768px) {
    .footer__content {
        grid-template-columns: 1fr auto;
        align-items: start;
    }
}

.footer__title {
    font-size: var(--fs-lg);
    font-weight: var(--fw-bold);
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
}

.footer__description {
    color: rgba(255, 255, 255, 0.35);
    max-width: 380px;
    line-height: 1.75;
    font-size: var(--fs-sm);
}

.footer__social-title {
    font-size: 10px;
    font-weight: var(--fw-semibold);
    color: rgba(255, 255, 255, 0.35);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: var(--space-base);
    font-family: var(--font-mono);
}

.social__links {
    display: flex;
    gap: 8px;
}

.social__link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--border-radius);
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: var(--fs-base);
    transition: all var(--transition-base);
}

.social__link:hover {
    background: var(--gradient-secondary);
    border-color: transparent;
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.footer__bottom {
    text-align: center;
    padding-top: var(--space-base);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.25);
    font-size: 11px;
    font-family: var(--font-mono);
    letter-spacing: 0.07em;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 767px) {
    .section__title {
        font-size: var(--fs-3xl);
    }

    .hero__cta .btn {
        width: 100%;
        max-width: 280px;
    }

    .project__card {
        max-width: 420px;
        margin: 0 auto;
    }

    .contact__info {
        padding: 0;
    }
}

/* ===== SCROLL ANIMATIONS ===== */
@media (prefers-reduced-motion: no-preference) {
    .section__title,
    .section__tag,
    .section__subtitle,
    .project__card,
    .skill__item,
    .contact__info,
    .contact__form,
    .about__info,
    .about__skills {
        opacity: 0;
        transform: translateY(28px);
    }

    .animate-in {
        opacity: 1 !important;
        transform: translateY(0) !important;
        transition: opacity 0.65s ease, transform 0.65s ease;
    }

    .project__card:nth-child(2).animate-in {
        transition-delay: 0.1s;
    }

    .project__card:nth-child(3).animate-in {
        transition-delay: 0.2s;
    }

    .project__card:nth-child(4).animate-in {
        transition-delay: 0.3s;
    }

    .project__card:nth-child(5).animate-in {
        transition-delay: 0.4s;
    }
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.btn:focus-visible,
.nav__link:focus-visible,
.form__input:focus-visible,
.form__textarea:focus-visible,
.social__link:focus-visible,
.project__link:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 3px;
}