/* ========================================
   MAIN STYLESHEET
   Import all CSS modules
   ======================================== */

@import url('variables.css');
@import url('reset.css');
@import url('typography.css');
@import url('animations.css');
@import url('components.css');

/* ========================================
   BASE STYLES
   ======================================== */

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
}

/* Smooth theme transition */
body {
    transition: background-color var(--transition-slow) var(--ease-out),
        color var(--transition-slow) var(--ease-out);
}

/* ========================================
   HERO SECTION
   ======================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, rgba(30, 27, 75, 0.9) 0%, rgba(49, 46, 129, 0.8) 100%),
        url('../images/hero-bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%);
    animation: gradientShift 10s ease infinite;
    background-size: 200% 200%;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 1000px;
    padding: 0 var(--space-6);
}

.hero-greeting {
    font-size: var(--font-size-lg);
    color: var(--color-secondary-300);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--space-4);
    opacity: 0;
    animation: fadeInDown var(--transition-slower) var(--ease-out) 0.2s forwards;
}

.hero-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: var(--font-weight-extrabold);
    color: white;
    margin-bottom: var(--space-6);
    line-height: 1.1;
    opacity: 0;
    animation: fadeInUp var(--transition-slower) var(--ease-out) 0.4s forwards;
}

.hero-title .gradient-text {
    background: linear-gradient(135deg, #14B8A6 0%, #06B6D4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-top: var(--space-4);
}

.hero-credential {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: rgba(255, 255, 255, 0.95);
    margin: var(--space-4) 0 var(--space-6) 0;
    letter-spacing: 0.5px;
    opacity: 0;
    animation: fadeInUp var(--transition-slower) var(--ease-out) 0.5s forwards;
}

.hero-description {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--space-8);
    line-height: var(--line-height-relaxed);
    opacity: 0;
    animation: fadeInUp var(--transition-slower) var(--ease-out) 0.6s forwards;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: fadeInUp var(--transition-slower) var(--ease-out) 0.8s forwards;
}

.hero .btn {
    min-width: 160px;
}

.hero .btn-ghost {
    color: white !important;
    border-color: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(4px);
}

.hero .btn-ghost:hover {
    background: white;
    color: var(--color-primary-600) !important;
    border-color: white;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-12);
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: var(--font-size-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
    transition: opacity var(--transition-base) var(--ease-out);
    z-index: 10;
    text-decoration: none;
}

.hero-scroll:hover {
    opacity: 0.8;
}

.hero-scroll span {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    font-weight: var(--font-weight-medium);
}

.hero-scroll-icon {
    width: 24px;
    height: 40px;
    border: 2px solid white;
    /* Explicitly white */
    border-radius: var(--radius-full);
    position: relative;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-scroll-icon::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: white;
    /* Explicitly white */
    border-radius: var(--radius-full);
    animation: bounce 2s infinite;
}

/* Wave Separator */
.hero-separator {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    z-index: 2;
}

.hero-separator svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 150px;
}

.hero-separator .shape-fill {
    fill: var(--bg-primary);
}

@media (max-width: 768px) {
    .hero-separator svg {
        height: 80px;
    }
}

/* ========================================
   ABOUT SECTION
   ======================================== */

.about {
    padding: var(--space-20) 0;
    background: var(--bg-primary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-12);
    align-items: start;
}

@media (max-width: 768px) {
    .about-grid {
        display: flex;
        flex-direction: column;
        gap: var(--space-8);
    }
    
    .about-image {
        order: -1;
        position: relative;
        top: 0;
    }
    
    .about-content {
        order: 1;
    }
}

.about-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

@media (min-width: 769px) {
    .about-image {
        position: sticky;
        top: 100px;
    }
}

.about-image img {
    width: 100%;
    max-width: 350px;
    height: auto;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-2xl);
    border: 4px solid var(--glass-border);
}

.about-image::before {
    content: '';
    position: absolute;
    inset: -20px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    opacity: 0.1;
    z-index: -1;
}

.about-content h2 {
    margin-bottom: var(--space-6);
}

.about-content p {
    margin-bottom: var(--space-4);
    font-size: var(--font-size-lg);
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-8);
    justify-items: center;
}

.stat-item {
    text-align: center;
    padding: var(--space-4);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-extrabold);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: block;
    margin-bottom: var(--space-2);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    font-weight: var(--font-weight-medium);
}

/* ========================================
   EXPERIENCE SECTION
   ======================================== */

.experience {
    padding: var(--space-20) 0;
    background: var(--bg-secondary);
}

.experience-list {
    max-width: 900px;
    margin: 0 auto;
}

/* ========================================
   SKILLS SECTION
   ======================================== */

.skills {
    padding: var(--space-20) 0;
    background: var(--bg-primary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
}

.skills-category {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
}

.skills-category h3 {
    margin-bottom: var(--space-6);
    color: var(--color-primary-600);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

/* ========================================
   EDUCATION SECTION
   ======================================== */

.education {
    padding: var(--space-20) 0;
    background: var(--bg-secondary);
}

.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

.education-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    transition: all var(--transition-base) var(--ease-out);
}

.education-card:hover {
    box-shadow: var(--shadow-glow);
    border-color: var(--color-primary-500);
    transform: translateY(-4px);
}

.education-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-4);
    box-shadow: var(--shadow-glow);
}

.education-icon svg {
    width: 30px;
    height: 30px;
    fill: white;
}

.education-year {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-600);
    margin-bottom: var(--space-2);
}

.education-degree {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-2);
}

.education-institution {
    font-size: var(--font-size-base);
    color: var(--text-secondary);
    margin-bottom: var(--space-3);
}

.education-description {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    line-height: var(--line-height-relaxed);
}

/* ========================================
   CONTACT SECTION
   ======================================== */

.contact {
    padding: var(--space-20) 0;
    background: var(--bg-primary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
}

.contact-info h3 {
    margin-bottom: var(--space-6);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: var(--space-5);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: var(--shadow-glow);
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    fill: white;
}

.contact-details h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-1);
}

.contact-details p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin: 0;
}

.social-links {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.social-link {
    width: 48px;
    height: 48px;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base) var(--ease-out);
}

.social-link:hover {
    background: var(--color-primary-600);
    border-color: var(--color-primary-600);
    box-shadow: var(--shadow-glow);
    transform: translateY(-4px);
}

.social-link svg {
    width: 24px;
    height: 24px;
    fill: var(--text-primary);
    transition: fill var(--transition-base) var(--ease-out);
}

.social-link:hover svg {
    fill: white;
}

.contact-form {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-16) 0 var(--space-8);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-4);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--space-2);
}

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition-base) var(--ease-out);
}

.footer-links a:hover {
    color: var(--color-primary-600);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-6);
    border-top: 1px solid var(--border-color);
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 1024px) {

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

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

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(17, 24, 39, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--space-6);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        transition: transform var(--transition-base) var(--ease-out),
            opacity var(--transition-base) var(--ease-out);
    }

    .navbar-menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .navbar-menu .navbar-link {
        color: #FFFFFF;
        width: 100%;
        padding: var(--space-4);
        font-weight: var(--font-weight-medium);
        border-radius: var(--radius-md);
    }

    .navbar-menu .navbar-link:hover {
        color: #FFFFFF;
        background: rgba(79, 70, 229, 0.2);
    }

    .navbar-actions {
        gap: var(--space-2);
    }

    .navbar-toggle {
        display: flex;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }

    .hero-cta {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: var(--space-4);
    }

    .section {
        padding: var(--space-12) 0;
    }
}