/* =============================================
   KrutiDevToUnicode.info — Shared Styles v2
   Richer colours, improved visual hierarchy,
   SEO-friendly semantic structure
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Noto+Sans+Devanagari:wght@400;600&display=swap');

/* ---------- Reset & Variables ---------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Background layers */
    --bg: #080c14;
    --surface: #0f1623;
    --surface-2: #162035;
    --border: #1e2d4d;

    /* Brand accent — vivid indigo-violet */
    --accent: #7c6ef1;
    --accent-light: #a5b4fc;
    --accent-glow: rgba(124, 110, 241, .35);

    /* Secondary amber */
    --accent-2: #f59e0b;
    --accent-2-glow: rgba(245, 158, 11, .3);

    /* Semantic */
    --text: #e8edf8;
    --text-muted: #7c8db5;
    --success: #22c55e;
    --download: #0ea5e9;
    --download-glow: rgba(14, 165, 233, .3);

    --radius: 14px;
    --shadow: 0 8px 40px rgba(0, 0, 0, .55);
    --transition: .2s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg);
    /* Subtle dot-grid texture */
    background-image: radial-gradient(rgba(124, 110, 241, .06) 1px, transparent 1px);
    background-size: 28px 28px;
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.65;
}

/* ---------- Nav ---------- */
nav {
    background: rgba(8, 12, 20, .9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 0 1.5rem;
}

.nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 62px;
}

.nav-logo {
    font-size: 1rem;
    font-weight: 800;
    text-decoration: none;
    background: linear-gradient(135deg, #a5b4fc, var(--accent-2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -.4px;
    white-space: nowrap;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.nav-logo img {
    display: block;
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: .25rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: .875rem;
    font-weight: 500;
    padding: .42rem .65rem;
    border-radius: 7px;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--text);
    background: var(--surface-2);
}

.nav-links a.active {
    color: var(--accent-light);
}

/* Hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    padding: 6px;
    flex-shrink: 0;
}

/* ---------- Hero ---------- */
.hero {
    text-align: center;
    padding: 4.5rem 1.5rem 2.5rem;
    background:
        radial-gradient(ellipse 90% 70% at 50% 0%,
            rgba(124, 110, 241, .22) 0%,
            rgba(245, 158, 11, .07) 60%,
            transparent 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -80px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(124, 110, 241, .15), transparent 70%);
    pointer-events: none;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 800;
    letter-spacing: -1.5px;
    background: linear-gradient(135deg, #fff 20%, var(--accent-light) 60%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: .85rem;
    line-height: 1.15;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 580px;
    margin: 0 auto;
}

/* Reverse / variant hero overlays */
.hero-reverse {
    background:
        radial-gradient(ellipse 90% 70% at 50% 0%,
            rgba(245, 158, 11, .18) 0%,
            rgba(124, 110, 241, .06) 60%,
            transparent 100%);
}

.hero-reverse h1 {
    background: linear-gradient(135deg, #fff 20%, #fde68a 60%, var(--accent-2) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Preeti (cyan) */
.hero-preeti,
.hero-preeti-rev {
    background:
        radial-gradient(ellipse 90% 70% at 50% 0%,
            rgba(6, 182, 212, .18) 0%,
            rgba(124, 110, 241, .05) 60%,
            transparent 100%);
}

.hero-preeti h1,
.hero-preeti-rev h1 {
    background: linear-gradient(135deg, #fff 20%, #a5f3fc 60%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Mangal (green) */
.hero-mangal,
.hero-mangal-rev {
    background:
        radial-gradient(ellipse 90% 70% at 50% 0%,
            rgba(16, 185, 129, .18) 0%,
            rgba(124, 110, 241, .05) 60%,
            transparent 100%);
}

.hero-mangal h1,
.hero-mangal-rev h1 {
    background: linear-gradient(135deg, #fff 20%, #a7f3d0 60%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Switch banner */
.switch-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .75rem;
    background: linear-gradient(135deg, var(--surface) 0%, var(--surface-2) 100%);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: .85rem 1.25rem;
    margin-bottom: 1.75rem;
    font-size: .9rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.switch-banner a {
    color: var(--accent-light);
    font-weight: 600;
    text-decoration: none;
    transition: color var(--transition);
}

.switch-banner a:hover {
    color: #fff;
}

/* ---------- Main Container ---------- */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem 3.5rem;
}

/* ---------- Converter Card ---------- */
.converter-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    margin-bottom: 2.5rem;
    transition: border-color var(--transition);
}

.converter-card:focus-within {
    border-color: rgba(124, 110, 241, .5);
    box-shadow: var(--shadow), 0 0 0 3px rgba(124, 110, 241, .1);
}

.converter-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.pane {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: .75rem;
}

.pane:first-child {
    border-right: 1px solid var(--border);
}

.pane-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pane-label {
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.4px;
    color: var(--text-muted);
}

.pane textarea {
    width: 100%;
    min-height: 240px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    line-height: 1.7;
    padding: 1rem;
    resize: vertical;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.pane textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Output Devanagari font */
#unicodeOutput,
#krutiOutput,
#mangalOutput,
#preetiOutput,
#krutiOutput2 {
    font-family: 'Noto Sans Devanagari', sans-serif;
    font-size: 1.1rem;
}

/* Input Unicode field */
#unicodeInput,
#uniPreetiInput,
#mangalInput {
    font-family: 'Noto Sans Devanagari', sans-serif;
    font-size: 1.1rem;
}

/* ---------- Toolbar ---------- */
.toolbar {
    display: flex;
    align-items: center;
    gap: .65rem;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--surface-2), var(--surface));
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.stats {
    font-size: .8rem;
    color: var(--text-muted);
    margin-right: auto;
}

.stats span {
    color: var(--text);
    font-weight: 600;
}

/* Toggle */
.toggle-wrap {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .82rem;
    color: var(--text-muted);
    cursor: pointer;
}

.toggle-wrap input[type="checkbox"] {
    appearance: none;
    width: 38px;
    height: 22px;
    background: var(--border);
    border-radius: 99px;
    cursor: pointer;
    position: relative;
    transition: background var(--transition);
}

.toggle-wrap input[type="checkbox"]::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: #fff;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: transform var(--transition);
}

.toggle-wrap input[type="checkbox"]:checked {
    background: var(--accent);
}

.toggle-wrap input[type="checkbox"]:checked::after {
    transform: translateX(16px);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .52rem 1.1rem;
    border: none;
    border-radius: 9px;
    font-size: .845rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
    font-family: 'Inter', sans-serif;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #818cf8);
    color: #fff;
    box-shadow: 0 4px 18px var(--accent-glow);
}

.btn-primary:hover {
    filter: brightness(1.12);
    transform: translateY(-1px);
}

.btn-primary-amber {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    color: #1a1108;
    box-shadow: 0 4px 18px var(--accent-2-glow);
}

.btn-primary-amber:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
}

.btn-primary-cyan {
    background: linear-gradient(135deg, #06b6d4, #22d3ee);
    color: #fff;
    box-shadow: 0 4px 18px rgba(6, 182, 212, .35);
}

.btn-primary-cyan:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.btn-primary-green {
    background: linear-gradient(135deg, #10b981, #34d399);
    color: #fff;
    box-shadow: 0 4px 18px rgba(16, 185, 129, .35);
}

.btn-primary-green:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text-muted);
}

.btn-secondary:hover {
    color: var(--text);
    border-color: var(--accent);
    background: var(--surface);
}

.btn.copied {
    background: var(--success) !important;
    color: #fff;
}

.btn-download {
    background: linear-gradient(135deg, var(--download), #38bdf8);
    color: #fff;
    box-shadow: 0 4px 18px var(--download-glow);
}

.btn-download:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.btn-download:disabled {
    opacity: .55;
    cursor: not-allowed;
    transform: none;
}

/* ---------- Feature Cards ---------- */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 1.25rem;
    margin: 2rem 0;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem 1.4rem;
    transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent-glow), transparent 60%);
    opacity: 0;
    transition: opacity var(--transition);
}

.feature-card:hover {
    border-color: rgba(124, 110, 241, .5);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, .35);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: .75rem;
}

.feature-card h3 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: .4rem;
}

.feature-card p {
    font-size: .875rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* ---------- Article / Info Sections ---------- */
.section {
    margin: 2.5rem 0;
}

.section h2 {
    font-size: 1.55rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 1.25rem 0 .5rem;
    color: var(--accent-light);
}

.section p,
.section li {
    color: var(--text-muted);
    font-size: .95rem;
    line-height: 1.8;
}

.section ul,
.section ol {
    padding-left: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: .4rem;
}

.section a {
    color: var(--accent-light);
    text-decoration: underline;
}

/* Steps */
.steps {
    list-style: none;
    padding: 0;
    counter-reset: step;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.steps li {
    counter-increment: step;
    display: flex;
    gap: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.1rem 1.25rem;
}

.steps li::before {
    content: counter(step);
    min-width: 2rem;
    height: 2rem;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), #818cf8);
    color: #fff;
    font-weight: 700;
    font-size: .85rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 8px var(--accent-glow);
}

/* ---------- Page Hero (Info pages) ---------- */
.page-hero {
    text-align: center;
    padding: 3.5rem 1.5rem 2rem;
    background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(124, 110, 241, .18) 0%, transparent 70%);
}

.page-hero h1 {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    letter-spacing: -.5px;
    background: linear-gradient(135deg, #fff, var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: .6rem;
}

.page-hero p {
    color: var(--text-muted);
    font-size: 1rem;
    max-width: 520px;
    margin: 0 auto;
}

.content-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem 2.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

/* Contact Form */
.form-group {
    display: flex;
    flex-direction: column;
    gap: .5rem;
    margin-bottom: 1.25rem;
}

.form-group label {
    font-size: .875rem;
    font-weight: 600;
    color: var(--text-muted);
}

.form-group input,
.form-group textarea,
.form-group select {
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: 9px;
    color: var(--text);
    font-family: 'Inter', sans-serif;
    font-size: .95rem;
    padding: .75rem 1rem;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group select option {
    background: var(--surface-2);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group textarea {
    min-height: 130px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ---------- Badge ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    background: rgba(124, 110, 241, .15);
    border: 1px solid rgba(124, 110, 241, .3);
    color: var(--accent-light);
    font-size: .75rem;
    font-weight: 600;
    border-radius: 99px;
    padding: .28rem .85rem;
    margin-bottom: 1.25rem;
}

/* ---------- FAQ Accordion ---------- */
.faq-section {
    margin: 2.5rem 0 3rem;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: .75rem;
}

.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.faq-item.open {
    border-color: rgba(124, 110, 241, .45);
    box-shadow: 0 0 0 3px rgba(124, 110, 241, .08);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.1rem 1.4rem;
    background: none;
    border: none;
    color: var(--text);
    font-family: 'Inter', sans-serif;
    font-size: .97rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.faq-question:hover {
    background: var(--surface-2);
    color: var(--accent-light);
}

.faq-item.open .faq-question {
    color: var(--accent-light);
    background: rgba(124, 110, 241, .07);
}

.faq-icon {
    flex-shrink: 0;
    color: var(--text-muted);
    transition: transform .3s ease, color var(--transition);
}

.faq-item.open .faq-icon {
    transform: rotate(180deg);
    color: var(--accent-light);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .3s ease;
    padding: 0 1.4rem;
}

.faq-item.open .faq-answer {
    max-height: 400px;
    padding: 0 1.4rem 1.25rem;
}

.faq-answer p {
    color: var(--text-muted);
    font-size: .93rem;
    line-height: 1.8;
}

.faq-answer a {
    color: var(--accent-light);
    text-decoration: underline;
}

/* ---------- Footer ---------- */
footer {
    margin-top: auto;
    border-top: 1px solid var(--border);
    padding: 2rem 1.5rem;
    text-align: center;
    background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%);
}

.footer-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.footer-links {
    display: flex;
    gap: .2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: .82rem;
    padding: .3rem .65rem;
    border-radius: 7px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--text);
    background: var(--surface-2);
}

.footer-copy {
    font-size: .78rem;
    color: var(--text-muted);
    opacity: .75;
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
    .nav-links a {
        font-size: .72rem;
        padding: .35rem .42rem;
    }

    .nav-logo {
        font-size: .9rem;
    }
}

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

    .pane:first-child {
        border-right: none;
        border-bottom: 1px solid var(--border);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .content-card {
        padding: 1.5rem;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 62px;
        left: 0;
        right: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        padding: .75rem .5rem;
        gap: .2rem;
    }

    .nav-links.open {
        display: flex;
    }

    .nav-links a {
        font-size: .9rem;
        padding: .6rem .85rem;
    }

    .nav-toggle {
        display: flex;
    }
}

@media (max-width: 480px) {
    .toolbar {
        gap: .45rem;
    }

    .btn {
        padding: .48rem .8rem;
        font-size: .8rem;
    }

    .stats {
        width: 100%;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero {
        padding: 3rem 1.25rem 2rem;
    }
}