/* styles.css */
/* styles.css for the UI and UX and enahncement in this project. */
/* The open source internet speed checker. */
/* ==========================================================================
   SpeedPulse - Global CSS & Themes
   ========================================================================== */

:root[data-theme="dark"] {
    --bg-base: #030712;
    /* Deep OLED-friendly dark */
    --bg-glass: linear-gradient(135deg, rgba(17, 24, 39, 0.7), rgba(17, 24, 39, 0.3));
    --border-glass: rgba(255, 255, 255, 0.08);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-primary: #00f2fe;
    /* Neon cyan */
    --accent-secondary: #4facfe;
    /* Vibrant blue */
    --down-color: #06b6d4;
    --up-color: #a855f7;
    --ping-color: #10b981;
    --danger: #f43f5e;
    --success: #10b981;
    --warning: #f59e0b;
    --card-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    --inner-glow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
    --hover-bg: rgba(255, 255, 255, 0.06);
}

:root[data-theme="light"] {
    --bg-base: #f0f2f5;
    /* Clean Apple-esque grayish white */
    --bg-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.65));
    --border-glass: rgba(255, 255, 255, 0.6);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-primary: #0071e3;
    /* Deep blue */
    --accent-secondary: #5e5ce6;
    /* Purple */
    --down-color: #0284c7;
    --up-color: #7c3aed;
    --ping-color: #059669;
    --danger: #e11d48;
    --success: #059669;
    --warning: #d97706;
    --card-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.05), 0 0 20px rgba(255, 255, 255, 0.6);
    --inner-glow: inset 0 1px 1px rgba(255, 255, 255, 1);
    --hover-bg: rgba(0, 0, 0, 0.03);
}

/* Custom theme template (variables overwritten by script.js) */
:root[data-theme="custom"] {
    --bg-base: #030712;
    --bg-glass: linear-gradient(135deg, rgba(17, 24, 39, 0.7), rgba(17, 24, 39, 0.3));
    --border-glass: rgba(255, 255, 255, 0.08);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-primary: #00f2fe;
    --accent-secondary: #4facfe;
    --down-color: #06b6d4;
    --up-color: #a855f7;
    --ping-color: #10b981;
    --danger: #f43f5e;
    --success: #10b981;
    --warning: #f59e0b;
    --card-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    --inner-glow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
    --hover-bg: rgba(255, 255, 255, 0.06);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

/* Background Decor */
@keyframes ambientDrift {
    0% {
        transform: translate(0px, 0px) scale(1);
    }

    33% {
        transform: translate(30px, -50px) scale(1.1);
    }

    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }

    100% {
        transform: translate(0px, 0px) scale(1);
    }
}

body::before {
    content: '';
    position: fixed;
    top: -20%;
    left: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, var(--accent-primary) 0%, transparent 60%);
    opacity: 0.12;
    filter: blur(100px);
    z-index: -1;
    border-radius: 50%;
    animation: ambientDrift 20s ease-in-out infinite;
}

body::after {
    content: '';
    position: fixed;
    bottom: -20%;
    right: -10%;
    width: 70vw;
    height: 70vw;
    background: radial-gradient(circle, var(--accent-secondary) 0%, transparent 60%);
    opacity: 0.12;
    filter: blur(120px);
    z-index: -1;
    border-radius: 50%;
    animation: ambientDrift 25s ease-in-out infinite reverse;
}

/* Typography */
h1,
h2,
h3,
.main-speed {
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 1.4rem;
    margin-bottom: 1.25rem;
    font-weight: 600;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* App Container */
#app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Glassmorphism Panel */
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--border-glass);
    border-radius: 24px;
    box-shadow: var(--card-shadow), var(--inner-glow);
    padding: 1.75rem;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo h1 {
    font-size: 1.5rem;
    background: linear-gradient(to right, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.controls {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
}

select {
    background: var(--hover-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
    padding: 0.5rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
}

select:focus {
    border-color: var(--accent-primary);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, color 0.2s;
}

.icon-btn:hover {
    background: var(--hover-bg);
    color: var(--text-primary);
}

.icon-btn:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Theme & Sound toggle icon state */
[data-theme="dark"] .moon-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: none;
}

.sound-off {
    display: none;
}

.sound-muted .sound-on {
    display: none;
}

.sound-muted .sound-off {
    display: block;
}

/* Main Layout */
#main-content {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Gauge Section */
.gauge-section {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.gauge-container {
    position: relative;
    width: 250px;
    height: 125px;
    /* Half circle */
    margin: 1rem auto;
}

.gauge-svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.gauge-bg {
    stroke: var(--border-glass);
    stroke-width: 14;
}

.gauge-value {
    stroke: url(#gradient);
    stroke-width: 14;
    transition: stroke-dashoffset 0.1s linear;
    filter: drop-shadow(0 0 10px rgba(0, 242, 254, 0.4));
}

.gauge-readout {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.main-speed {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1;
    letter-spacing: -2px;
}

.main-unit {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.current-phase {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-primary);
    font-weight: 600;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    width: 100%;
}

.metric-card {
    background: var(--hover-bg);
    border: 1px solid transparent;
    border-radius: 16px;
    padding: 1.25rem;
    text-align: left;
    position: relative;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease, border-color 0.3s ease;
}

.metric-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--border-glass);
}

.metric-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    letter-spacing: -0.02em;
}

.metric-sub {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.highlight-down {
    color: var(--down-color);
}

.highlight-up {
    color: var(--up-color);
}

.metric-progress {
    height: 4px;
    background: var(--border-glass);
    border-radius: 2px;
    margin-top: 0.75rem;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    border-radius: 2px;
    transition: width 0.3s ease;
}

#prog-down {
    background: var(--down-color);
}

#prog-up {
    background: var(--up-color);
}

/* Tooltips */
.tooltip {
    display: none;
    position: absolute;
    top: -40px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-base);
    color: var(--text-primary);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    width: max-content;
    max-width: 200px;
    text-align: center;
    border: 1px solid var(--border-glass);
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.metric-header:hover .tooltip {
    display: block;
}

.tooltip-host {
    position: relative;
}

.tooltip-host:hover .tooltip {
    display: block;
}

/* Buttons */
.action-bar {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1rem;
}

button {
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    padding: 0.8rem 2.2rem;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease, filter 0.3s ease;
}

.primary-btn {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
}

.primary-btn:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 242, 254, 0.5);
    filter: brightness(1.1);
}

.primary-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.secondary-btn:hover {
    background: var(--hover-bg);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.hidden {
    display: none !important;
}

/* Chart Section */
.chart-container {
    position: relative;
    height: 250px;
    width: 100%;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.legend {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.legend-item::before {
    content: '';
    display: block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.legend-item.down::before {
    background: var(--down-color);
}

.legend-item.up::before {
    background: var(--up-color);
}

/* Info Grid */
.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.details-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-glass);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-row .label {
    color: var(--text-secondary);
}

.detail-row .value {
    font-weight: 500;
    text-align: right;
}

/* Grade Section */
.grade-display {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.grade-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--hover-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    color: var(--accent-primary);
    border: 2px solid var(--border-glass);
}

.grade-text {
    flex: 1;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.readiness-list {
    list-style: none;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.readiness-list li {
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-secondary);
    /* Default neutral */
}

.status-pass {
    background: var(--success);
}

.status-fail {
    background: var(--danger);
}

/* History Section */
.history-actions {
    display: flex;
    gap: 0.5rem;
}

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

th,
td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-glass);
}

th {
    color: var(--text-secondary);
    font-weight: 500;
    white-space: nowrap;
}

tbody tr:hover {
    background: var(--hover-bg);
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.modal-content {
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
}

.compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1rem;
}

.mt-4 {
    margin-top: 1rem;
}

/* Confetti Canvas */
#confetti-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 999;
}

/* Animations */
@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

.testing-active .gauge-value {
    filter: drop-shadow(0 0 8px var(--accent-primary));
}

/* Accessibility & Prefers Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }

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

    .readiness-list {
        grid-template-columns: 1fr;
    }

    .controls select {
        max-width: 100px;
    }
}

/* Footer */
.app-footer {
    margin-top: 3rem;
    padding: 3rem 2rem 2rem;
    border-radius: 20px 20px 0 0;
    border-bottom: none;
    background: var(--bg-glass);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    background: linear-gradient(to right, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.footer-brand strong {
    color: var(--text-primary);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: var(--text-secondary);
    transition: color 0.3s ease, transform 0.3s ease;
}

.social-links a:hover {
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.footer-contact h4,
.footer-legal h4 {
    color: var(--text-primary);
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
}

.footer-contact a,
.footer-legal a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.8rem;
    font-size: 0.9rem;
    transition: color 0.2s ease;
    word-break: break-all;
}

.footer-contact a:hover,
.footer-legal a:hover {
    color: var(--accent-secondary);
}

.footer-bottom {
    text-align: center;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-glass);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Theme Studio Styles */
.theme-studio-content {
    max-width: 500px;
}

.studio-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.studio-section h3 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.color-pickers {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

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

.picker-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

input[type="color"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    border: none;
    width: 100%;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    background: var(--hover-bg);
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="color"]::-webkit-color-swatch {
    border: 1px solid var(--border-glass);
    border-radius: 8px;
}

.mode-select {
    display: flex;
    gap: 1rem;
}

.mode-btn {
    flex: 1;
    padding: 0.75rem;
    border-radius: 12px;
    border: 1px solid var(--border-glass);
    background: var(--hover-bg);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.mode-btn.active {
    border-color: var(--accent-primary);
    background: rgba(0, 242, 254, 0.1);
    color: var(--accent-primary);
}

.studio-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.studio-actions button {
    flex: 1;
}

.hidden {
    display: none !important;
}
/* The code ends here. */
/* Thanks */