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

:root {
    --bg-primary: #080c14;
    --bg-secondary: #0e1726;
    --bg-card: rgba(17, 24, 39, 0.7);
    --border-glass: rgba(255, 255, 255, 0.06);
    --border-glow: rgba(6, 182, 212, 0.2);
    
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --text-dark: #6b7280;

    --color-cyan: #06b6d4;
    --color-violet: #8b5cf6;
    --color-rose: #f43f5e;
    --color-emerald: #10b981;

    --gradient-primary: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-violet) 100%);
    --gradient-dark: linear-gradient(180deg, #0e1726 0%, #080c14 100%);
    --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.15);
    --shadow-glow-hover: 0 0 30px rgba(139, 92, 246, 0.3);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-primary);
    background-image: 
        radial-gradient(at 0% 0%, rgba(6, 182, 212, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(139, 92, 246, 0.08) 0px, transparent 50%);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.5;
}

header {
    border-bottom: 1px solid var(--border-glass);
    background-color: rgba(8, 12, 20, 0.8);
    backdrop-filter: blur(12px);
    padding: 1.25rem 2rem;
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.025em;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    cursor: pointer;
}

.logo-icon {
    width: 2.25rem;
    height: 2.25rem;
    background: var(--gradient-primary);
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-weight: 800;
    font-size: 1.2rem;
    -webkit-text-fill-color: initial;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
}

.badge {
    background: rgba(6, 182, 212, 0.1);
    border: 1px solid rgba(6, 182, 212, 0.2);
    color: var(--color-cyan);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Header Page Indicator Pill */
.header-page-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.25);
    color: var(--color-cyan);
    padding: 0.35rem 0.85rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    backdrop-filter: blur(8px);
    transition: all 0.3s ease;
}

.indicator-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 50%;
    background-color: var(--color-cyan);
    box-shadow: 0 0 8px var(--color-cyan);
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.35); opacity: 0.65; }
}

@media (max-width: 640px) {
    .header-page-indicator {
        display: none;
    }
}

main {
    max-width: 1200px;
    width: 100%;
    margin: 2.5rem auto;
    padding: 0 2rem;
    flex-grow: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
}

@media (max-width: 900px) {
    main {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.section-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 1.25rem;
    padding: 2.25rem;
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(16px);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.section-card:hover {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    padding-bottom: 0.75rem;
    margin-bottom: 0.75rem;
}

.card-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 2.5rem;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 9999px;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
}

input {
    background: rgba(8, 12, 20, 0.5);
    border: 1px solid var(--border-glass);
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.2s ease;
}

input:focus {
    outline: none;
    border-color: var(--color-cyan);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
    background: rgba(8, 12, 20, 0.8);
}

.grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.grid-4col {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

@media (max-width: 1024px) {
    .grid-4col {
        grid-template-columns: repeat(2, 1fr);
    }
}

button {
    background: var(--gradient-primary);
    color: #ffffff;
    border: none;
    padding: 0.875rem 1.5rem;
    border-radius: 0.75rem;
    font-family: inherit;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-hover);
}

button:active {
    transform: translateY(0);
}

.result-box {
    background: rgba(8, 12, 20, 0.6);
    border: 1px dashed var(--border-glass);
    border-radius: 0.75rem;
    padding: 1.25rem;
    min-height: 5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    transition: all 0.3s ease;
}

.result-box.active {
    border-style: solid;
    border-color: rgba(16, 185, 129, 0.2);
    background: rgba(16, 185, 129, 0.03);
}

.result-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.result-value {
    font-size: 1.1rem;
    font-weight: 500;
    word-break: break-all;
}

.badge-wasm {
    align-self: flex-start;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.2);
    color: var(--color-violet);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.placeholder-text {
    color: var(--text-dark);
    font-style: italic;
}

footer {
    border-top: 1px solid var(--border-glass);
    padding: 1.5rem 2rem;
    text-align: center;
    color: var(--text-dark);
    font-size: 0.85rem;
}

footer p + p {
    margin-top: 0.5rem;
}

.footer-links {
    margin-top: 0.75rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

.github-link,
.linkedin-link {
    color: var(--text-dark);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-bottom: none !important;
    padding-bottom: 0 !important;
    opacity: 0.6;
    transition: all 0.25s ease;
}

.github-link:hover,
.github-link:focus,
.linkedin-link:hover,
.linkedin-link:focus {
    color: var(--color-cyan);
    opacity: 1;
    transform: translateY(-2px);
    text-shadow: none !important;
    border-bottom: none !important;
}

footer a {
    color: var(--color-cyan);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    border-bottom: 1px dashed rgba(6, 182, 212, 0.4);
    padding-bottom: 2px;
}

footer a:hover,
footer a:focus {
    color: #ffffff;
    border-bottom-style: solid;
    border-bottom-color: var(--color-cyan);
    text-shadow: 0 0 10px rgba(6, 182, 212, 0.6);
}

.sparkle {
    color: var(--color-cyan);
    animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

select {
    background: rgba(8, 12, 20, 0.5);
    border: 1px solid var(--border-glass);
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    font-family: inherit;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.2s ease;
    cursor: pointer;
    width: 100%;
}

select:focus {
    border-color: var(--color-cyan);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.15);
    background: rgba(8, 12, 20, 0.8);
}

select option {
    background-color: var(--bg-secondary);
    color: var(--text-main);
}

.specs-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: 0.75rem;
    padding: 1.25rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem 1.5rem;
    font-size: 0.85rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.spec-label {
    color: var(--text-muted);
}

.spec-val {
    font-weight: 600;
    color: var(--color-cyan);
}

.full-width {
    grid-column: span 2;
}

@media (max-width: 900px) {
    .full-width {
        grid-column: span 1;
    }
    .grid-2col, .grid-3col {
        grid-template-columns: 1fr;
    }
}

/* Custom premium range sliders */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 9999px;
    outline: none;
    transition: background 0.3s;
    cursor: pointer;
    margin: 0.5rem 0;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-cyan);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.6);
    cursor: pointer;
    transition: transform 0.1s ease, background-color 0.1s ease;
}

input[type="range"]::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border: none;
    border-radius: 50%;
    background: var(--color-cyan);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.6);
    cursor: pointer;
    transition: transform 0.1s ease, background-color 0.1s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    background: #ffffff;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.8);
}

input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
    background: #ffffff;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.8);
}

/* Toggle Group button styles */
.toggle-group {
    display: inline-flex;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    border-radius: 0.5rem;
    padding: 0.2rem;
}

.toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.35rem 0.85rem;
    border-radius: 0.35rem;
    cursor: pointer;
    box-shadow: none;
    transition: all 0.2s ease;
}

.toggle-btn:hover {
    color: var(--text-main);
    transform: none;
    box-shadow: none;
}

.toggle-btn.active {
    background: var(--gradient-primary);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(6, 182, 212, 0.3);
}

/* Hamburger menu button */
.menu-hamburger {
    display: inline-flex;
    flex-direction: column;
    justify-content: space-between;
    width: 1.35rem;
    height: 1.0rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    margin: 0;
    box-shadow: none;
    border-radius: 0;
}

.menu-hamburger:hover {
    transform: none;
    box-shadow: none;
    opacity: 0.8;
}

.menu-hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--text-main);
    border-radius: 2px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Hamburger animation */
.menu-hamburger.open span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

.menu-hamburger.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.menu-hamburger.open span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* Dropdown Navigation Overlay */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: 0.75rem;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4), var(--shadow-glow);
    backdrop-filter: blur(16px);
    z-index: 1000;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-dropdown.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.nav-item {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.6rem 1.2rem;
    border-radius: 0.5rem;
    transition: all 0.2s ease;
}

.nav-item:hover {
    color: var(--color-cyan);
    background: rgba(6, 182, 212, 0.05);
}

.nav-item.active {
    color: #ffffff;
    background: var(--gradient-primary);
}

@media (max-width: 768px) {
    .grid-3col {
        grid-template-columns: 1fr;
    }
}