@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&family=Outfit:wght@300;500;700&display=swap');

:root {
    --bg-dark: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-blue: #38bdf8;
    --accent-violet: #818cf8;
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-highlight: rgba(255, 255, 255, 0.05);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    background-image: url('../../images/bg-v3.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Glassmorphism Container */
.container {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 3rem;
    max-width: 1000px;
    width: 90%;
    margin: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* Header / Profile */
header {
    text-align: center;
    margin-bottom: 3rem;
}

.avatar img {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    border: 3px solid var(--accent-blue);
    padding: 4px;
    object-fit: cover;
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.3);
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.avatar img:hover {
    transform: scale(1.05);
}

h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, var(--accent-blue), var(--accent-violet));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.02em;
}

.subtitle {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

/* Expertise Grid */
.expertise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.card {
    background: var(--glass-highlight);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-blue);
}

.card h3 {
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

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

/* Mobile Accordion (Hidden by default) */
.mobile-skills-accordion {
    display: none;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 3rem;
    width: 100%;
}

.mobile-skills-accordion details {
    background: var(--glass-highlight);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.mobile-skills-accordion details[open] {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-blue);
}

.mobile-skills-accordion summary {
    padding: 1rem;
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
    position: relative;
}

.mobile-skills-accordion summary::-webkit-details-marker {
    display: none;
}

.mobile-skills-accordion summary i.icon-main {
    color: var(--accent-blue);
    width: 24px;
    text-align: center;
    font-size: 1.2rem;
}

.mobile-skills-accordion summary::after {
    content: '\f078';
    /* fa-chevron-down */
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-left: auto;
    transition: transform 0.3s ease;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.mobile-skills-accordion details[open] summary::after {
    transform: rotate(180deg);
}

.mobile-skills-accordion p {
    padding: 0 1rem 1rem 3.5rem;
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Links */
.social-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    list-style: none;
    margin-top: 2rem;
}

.social-links a {
    color: var(--text-secondary);
    font-size: 1rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 220px;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
    font-family: 'Outfit', sans-serif;
}

.social-links a:hover {
    background: var(--accent-blue);
    color: var(--bg-dark);
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
}

/* Footer */
footer {
    text-align: center;
    margin-top: 3rem;
    font-size: 0.8rem;
    color: rgba(148, 163, 184, 0.5);
}

/* Mobile Responsive */
@media (min-width: 601px) {
    .mobile-skills-accordion {
        display: none !important;
    }
}

@media (max-width: 600px) {
    .container {
        padding: 1.5rem;
        width: 95%;
    }

    h1 {
        font-size: 2rem;
    }

    .social-links {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }

    /* Skills: Hide Grid, Show Accordion */
    .expertise-grid {
        display: none !important;
    }

    .mobile-skills-accordion {
        display: flex !important;
    }

    /* Hide Graph, Show List on Mobile */
    #chart-container {
        display: none !important;
    }

    .mobile-list-view {
        display: block !important;
    }
}

/* Mobile List View */
.mobile-list-view {
    display: none;
    margin-top: 1rem;
}

.mobile-list-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 1rem;
    margin-bottom: 0.75rem;
    transition: transform 0.2s ease, background 0.2s ease;
}

.mobile-list-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    border-color: var(--accent-blue);
}

/* AI Progress Graph */
#chart-section {
    width: 100%;
    margin-top: 3rem;
    padding: 2rem;
    background: var(--glass-highlight);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    position: relative;
    color: var(--text-primary);
}

#chart-container {
    width: 100%;
    height: 500px;
    position: relative;
}

.graph-controls {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 1rem;
    gap: 15px;
}

.toggle-group {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.toggle-radio {
    appearance: none;
    width: 16px;
    height: 16px;
    border: 2px solid var(--text-secondary);
    border-radius: 50%;
    outline: none;
    position: relative;
    background: transparent;
}

.toggle-radio:checked {
    border-color: var(--accent-blue);
}

.toggle-radio:checked::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 8px;
    height: 8px;
    background-color: var(--accent-blue);
    border-radius: 50%;
}

.toggle-label {
    font-size: 14px;
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
}

/* Loading Spinner */
.loading-container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem 0;
    width: 100%;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left-color: var(--accent-blue, #38bdf8);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}