/* ===== ABOUT SECTION ===== */
.about { background: var(--surface-1); position: relative; overflow: hidden; }
.about-grid { display: grid; gap: 3rem; margin-bottom: 4rem; }
@media (min-width: 1024px) { .about-grid { grid-template-columns: 1fr 1fr; } }

.about-subtitle {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--android-green);
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -0.01em;
}
.about-subtitle::before { content: "// "; opacity: 0.5; }

#about-description p {
    color: var(--on-surface-dim);
    line-height: 1.8;
    margin-bottom: 1rem;
    font-size: 0.9375rem;
}

.about-card { margin-top: 1.5rem; }

.card-icon-wrapper { display: flex; gap: 1rem; align-items: flex-start; }
.card-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.card-icon svg { width: 1.25rem; height: 1.25rem; }
.card-icon-emerald { background: var(--android-green-dim); color: var(--android-green); }
.card-icon-sky     { background: var(--tertiary-dim);      color: var(--tertiary); }
.card-icon-violet  { background: var(--secondary-dim);     color: var(--secondary); }

.card-text { flex: 1; }
.card-title { font-size: 1rem; font-weight: 600; margin-bottom: 0.375rem; color: var(--on-surface); }

.education-degree   { color: var(--android-green); font-weight: 600; font-size: 0.9rem; margin-bottom: 0.25rem; }
.education-institution { color: var(--on-surface-variant); font-size: 0.8125rem; margin-bottom: 0.25rem; }
.education-duration { color: var(--on-surface-dim); font-size: 0.8125rem; margin-bottom: 0.5rem; }
.education-gpa { display: flex; align-items: center; gap: 0.5rem; font-size: 0.8125rem; }
.education-gpa span:first-child { color: var(--on-surface-dim); }
.gpa-value { color: var(--android-green); font-weight: 600; font-family: 'JetBrains Mono', monospace; }

.achievements-list { list-style: none; }
.achievements-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    color: var(--on-surface-dim);
    font-size: 0.8125rem;
    margin-bottom: 0.5rem;
    line-height: 1.5;
}
.achievements-list li::before {
    content: "✓";
    color: var(--android-green);
    flex-shrink: 0;
    font-family: 'JetBrains Mono', monospace;
    font-weight: 700;
}

.highlights-container { display: flex; flex-direction: column; gap: 1rem; }
.highlight-card { cursor: pointer; }
.highlight-card:hover .card-title { color: var(--android-green); }
.highlight-card:hover .card-icon  { transform: scale(1.1); }
.highlight-description { color: var(--on-surface-dim); font-size: 0.8125rem; line-height: 1.75; }

/* Stats grid */
.stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
@media (min-width: 768px) { .stats-grid { grid-template-columns: repeat(4, 1fr); } }

.stat-card {
    background: var(--surface-2);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--android-green-dim), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}
.stat-card:hover::before { opacity: 1; }
.stat-card:hover { border-color: rgba(61,220,132,0.4); transform: translateY(-3px); box-shadow: var(--glow-green); }

.stat-card-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--android-green);
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 0.375rem;
    position: relative;
}
.stat-card-label { color: var(--on-surface-dim); font-size: 0.8125rem; position: relative; }

/* ===== SKILLS SECTION ===== */
.skills { background: var(--surface-0); position: relative; overflow: hidden; }
.skills-grid { display: grid; gap: 1.5rem; margin-bottom: 3rem; }
@media (min-width: 768px) { .skills-grid { grid-template-columns: repeat(2, 1fr); } }

.skill-category-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.25rem; }
.skill-category-icon {
    width: 2.25rem;
    height: 2.25rem;
    background: var(--android-green-dim);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}
.skill-category-icon svg { width: 1.125rem; height: 1.125rem; color: var(--android-green); }
.skill-category-title { font-size: 1rem; font-weight: 600; color: var(--on-surface); }

.skill-item { margin-bottom: 1rem; }
.skill-header { display: flex; justify-content: space-between; margin-bottom: 0.375rem; }
.skill-name  { color: var(--on-surface-variant); font-size: 0.875rem; font-weight: 500; }
.skill-level { color: var(--android-green); font-size: 0.8125rem; font-weight: 600; font-family: 'JetBrains Mono', monospace; }

.skill-bar {
    height: 5px;
    background: var(--surface-4);
    border-radius: var(--radius-full);
    overflow: hidden;
}
.skill-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--android-green), var(--tertiary));
    border-radius: var(--radius-full);
    width: 0;
    transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 8px rgba(61,220,132,0.4);
}
.skill-bar-fill.animate { width: var(--skill-width); }

/* Technologies chip cloud */
.technologies-card { background: var(--surface-2); }
.technologies-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.625rem;
    justify-content: center;
}
.tech-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.875rem;
    background: var(--surface-3);
    border: 1px solid var(--outline-variant);
    color: var(--on-surface-variant);
    border-radius: var(--radius-full);
    font-size: 0.8125rem;
    transition: all var(--transition-fast);
    cursor: default;
}
.tech-badge:hover {
    border-color: var(--android-green);
    color: var(--android-green);
    background: var(--android-green-dim);
    transform: translateY(-1px);
}

/* ===== EXPERIENCE SECTION ===== */
.experience { background: var(--surface-1); position: relative; overflow: hidden; }
.timeline { position: relative; }
.timeline-line {
    display: none;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    height: 100%;
    width: 2px;
    background: linear-gradient(to bottom, var(--android-green), var(--tertiary), var(--secondary));
    opacity: 0.4;
}
@media (min-width: 768px) { .timeline-line { display: block; } }

.experience-container { display: flex; flex-direction: column; gap: 2.5rem; }
.experience-item {
    position: relative;
    display: flex;
    align-items: center;
    flex-direction: column;
}
@media (min-width: 768px) {
    .experience-item { flex-direction: row; }
    .experience-item:nth-child(even) { flex-direction: row-reverse; }
}

.timeline-dot {
    display: none;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 1rem;
    height: 1rem;
    background: var(--android-green);
    border-radius: 50%;
    border: 3px solid var(--surface-1);
    z-index: 10;
    box-shadow: var(--glow-green);
}
@media (min-width: 768px) { .timeline-dot { display: block; } }

.experience-content { width: 100%; }
@media (min-width: 768px) {
    .experience-content { width: calc(50% - 2rem); padding-right: 2rem; }
    .experience-item:nth-child(even) .experience-content { padding-right: 0; padding-left: 2rem; }
}

.experience-header { margin-bottom: 1rem; }
.experience-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    gap: 0.75rem;
}
.experience-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: var(--on-surface);
    transition: color var(--transition-fast);
}
.experience-card:hover .experience-title { color: var(--android-green); }
.experience-company { color: var(--android-green); font-weight: 500; font-size: 0.875rem; }

.experience-type-badge {
    padding: 0.2rem 0.625rem;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 500;
    white-space: nowrap;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.experience-type-badge.internship {
    background: var(--tertiary-dim);
    border: 1px solid rgba(100,181,246,0.4);
    color: var(--tertiary);
}
.experience-type-badge.freelance {
    background: var(--android-green-dim);
    border: 1px solid rgba(61,220,132,0.4);
    color: var(--android-green);
}

.experience-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.8125rem;
    color: var(--on-surface-dim);
}
.experience-meta-item { display: flex; align-items: center; gap: 0.375rem; }
.experience-meta-item svg { width: 0.875rem; height: 0.875rem; }

.experience-responsibilities { list-style: none; margin-bottom: 1rem; }
.experience-responsibilities li {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    color: var(--on-surface-dim);
    font-size: 0.8125rem;
    margin-bottom: 0.5rem;
    line-height: 1.6;
}
.experience-responsibilities li::before {
    content: "▸";
    color: var(--android-green);
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.experience-technologies { display: flex; flex-wrap: wrap; gap: 0.375rem; }
.experience-tech-badge {
    background: var(--surface-3);
    border: 1px solid var(--outline-variant);
    color: var(--on-surface-variant);
    padding: 0.2rem 0.625rem;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 500;
}

/* ===== PROJECTS SECTION ===== */
.projects { background: var(--surface-0); position: relative; overflow: hidden; }
.projects-filter {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}
.filter-btn {
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 0.875rem;
    border: 1px solid var(--outline-variant);
    background: transparent;
    color: var(--on-surface-dim);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.filter-btn:hover { background: var(--surface-3); color: var(--on-surface); }
.filter-btn.active {
    background: var(--android-green);
    border-color: var(--android-green);
    color: var(--on-primary);
    box-shadow: var(--glow-green);
}

.projects-grid { display: grid; gap: 1.5rem; margin-bottom: 3rem; }
@media (min-width: 768px)  { .projects-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .projects-grid { grid-template-columns: repeat(3, 1fr); } }

.project-card { overflow: hidden; padding: 0; }

/* Android app card style */
.project-image-wrapper { position: relative; height: 10rem; overflow: hidden; }
.project-image { width: 100%; height: 100%; object-fit: cover; transition: transform var(--transition-slow); }
.project-card:hover .project-image { transform: scale(1.08); }
.project-image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(13,13,20,0.95), rgba(13,13,20,0.4) 60%, transparent);
}
.project-featured-badge {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: var(--android-green);
    color: var(--on-primary);
    padding: 0.2rem 0.625rem;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.project-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--on-surface);
    transition: color var(--transition-fast);
    padding: 1rem 1rem 0;
}
.project-card:hover .project-title { color: var(--android-green); }

.project-description {
    color: var(--on-surface-dim);
    font-size: 0.8125rem;
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
    padding: 0 1rem;
}

.project-technologies { display: flex; flex-wrap: wrap; gap: 0.375rem; margin-bottom: 0.75rem; padding: 0 1rem; }
.project-tech-badge {
    background: var(--surface-3);
    border: 1px solid var(--outline-variant);
    color: var(--on-surface-variant);
    padding: 0.2rem 0.5rem;
    border-radius: var(--radius-full);
    font-size: 0.6875rem;
}

.project-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.875rem 1rem;
    border-top: 1px solid var(--outline-variant);
    margin-top: 0.5rem;
}
.project-stars {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--on-surface-dim);
    font-size: 0.8125rem;
    font-family: 'JetBrains Mono', monospace;
}
.project-stars svg { width: 0.875rem; height: 0.875rem; fill: #FFD54F; color: #FFD54F; }

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--android-green);
    font-size: 0.8125rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
    padding: 0.3rem 0.75rem;
    border-radius: var(--radius-full);
    border: 1px solid rgba(61,220,132,0.3);
}
.project-link:hover { background: var(--android-green-dim); box-shadow: var(--glow-green); }
.project-link svg { width: 0.875rem; height: 0.875rem; }

.projects-cta { text-align: center; }

/* ===== CONTACT SECTION ===== */
.contact { background: var(--surface-1); position: relative; overflow: hidden; }
.contact-grid { display: grid; gap: 3rem; }
@media (min-width: 1024px) { .contact-grid { grid-template-columns: 1fr 1fr; } }

.contact-subtitle { font-size: 1.375rem; font-weight: 700; margin-bottom: 1rem; color: var(--on-surface); }
.contact-text { color: var(--on-surface-dim); line-height: 1.75; margin-bottom: 1.5rem; font-size: 0.9375rem; }

.contact-cards { display: flex; flex-direction: column; gap: 0.75rem; margin-bottom: 1.5rem; }
.contact-card:hover { border-color: rgba(61,220,132,0.4); }
.contact-card .card-content { display: flex; align-items: center; gap: 1rem; padding: 1rem 1.25rem; }
.contact-card-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}
.contact-card:hover .contact-card-icon { transform: scale(1.1); }
.contact-icon-emerald { background: var(--android-green-dim); color: var(--android-green); }
.contact-icon-sky     { background: var(--tertiary-dim);      color: var(--tertiary); }
.contact-card-icon svg { width: 1.25rem; height: 1.25rem; }
.contact-card-label { color: var(--on-surface-dim); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; }
.contact-card-value {
    color: var(--on-surface);
    font-weight: 500;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}
a.contact-card-value:hover { color: var(--android-green); }

.contact-social-title { color: var(--on-surface); font-weight: 600; margin-bottom: 0.75rem; font-size: 0.9rem; }
.contact-social-links { display: flex; gap: 0.75rem; }
.contact-social-link {
    width: 2.75rem;
    height: 2.75rem;
    background: var(--surface-3);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--on-surface-dim);
    text-decoration: none;
    transition: all var(--transition-fast);
}
.contact-social-link:hover {
    border-color: var(--android-green);
    color: var(--android-green);
    background: var(--android-green-dim);
    transform: translateY(-2px);
    box-shadow: var(--glow-green);
}
.contact-social-link svg { width: 1.125rem; height: 1.125rem; }

/* Material outlined text fields */
.contact-form-card { background: var(--surface-2); }
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-row { display: grid; gap: 1.25rem; }
@media (min-width: 640px) { .form-row { grid-template-columns: 1fr 1fr; } }
.form-group { display: flex; flex-direction: column; position: relative; }
.form-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--on-surface-dim);
    margin-bottom: 0.375rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}
.form-input,
.form-textarea {
    padding: 0.75rem 1rem;
    background: var(--surface-3);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    color: var(--on-surface);
    font-family: 'Roboto', sans-serif;
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--on-surface-dim); opacity: 0.6; }
.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--android-green);
    background: var(--surface-4);
    box-shadow: 0 0 0 3px rgba(61,220,132,0.12);
}
.form-textarea { resize: vertical; min-height: 120px; }

/* ===== FOOTER ===== */
.footer {
    background: var(--surface-0);
    border-top: 1px solid var(--outline-variant);
    padding: 3rem 0 1.5rem;
}
.footer-grid { display: grid; gap: 2rem; margin-bottom: 2rem; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: repeat(3, 1fr); } }

.footer-logo { display: flex; align-items: center; gap: 0.625rem; margin-bottom: 0.75rem; }
.footer-description { color: var(--on-surface-dim); font-size: 0.8125rem; line-height: 1.75; }
.footer-title { color: var(--on-surface); font-weight: 600; margin-bottom: 0.75rem; font-size: 0.875rem; letter-spacing: 0.04em; }
.footer-nav { list-style: none; }
.footer-nav li { margin-bottom: 0.375rem; }
.footer-link { color: var(--on-surface-dim); font-size: 0.8125rem; text-decoration: none; transition: color var(--transition-fast); }
.footer-link:hover { color: var(--android-green); }

.footer-social { display: flex; gap: 0.75rem; margin-bottom: 0.75rem; }
.footer-social-link {
    width: 2.25rem;
    height: 2.25rem;
    background: var(--surface-3);
    border: 1px solid var(--outline-variant);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--on-surface-dim);
    text-decoration: none;
    transition: all var(--transition-fast);
}
.footer-social-link:hover {
    border-color: var(--android-green);
    color: var(--android-green);
    background: var(--android-green-dim);
}
.footer-social-link svg { width: 1rem; height: 1rem; }
.footer-email { font-size: 0.8125rem; }
.footer-email a { color: var(--on-surface-dim); text-decoration: none; transition: color var(--transition-fast); }
.footer-email a:hover { color: var(--android-green); }

.footer-bottom {
    padding-top: 1.5rem;
    border-top: 1px solid var(--outline-variant);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}
@media (min-width: 640px) { .footer-bottom { flex-direction: row; justify-content: space-between; } }
.footer-copyright, .footer-credit {
    color: var(--on-surface-dim);
    font-size: 0.75rem;
    text-align: center;
    font-family: 'JetBrains Mono', monospace;
}
.footer-credit { display: flex; align-items: center; gap: 0.375rem; }
.heart-icon { width: 0.8rem; height: 0.8rem; fill: #CF6679; color: #CF6679; }

/* ===== TOAST — Android-style bottom snackbar ===== */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(150%);
    background: var(--surface-4);
    border: 1px solid var(--android-green);
    border-radius: var(--radius-lg);
    padding: 0.875rem 1.5rem;
    box-shadow: var(--shadow-3), var(--glow-green);
    transition: transform var(--transition-base);
    z-index: 100;
    min-width: 280px;
    max-width: 90vw;
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast-title { font-weight: 600; color: var(--android-green); margin-bottom: 0.25rem; font-size: 0.9rem; }
.toast-description { color: var(--on-surface-dim); font-size: 0.8125rem; }