/* ============================================================
   Sahrang Medtech — Home Page Styles  (css/index.css)
   Page-specific styles for index.html only.
   ============================================================ */


/* ── HERO SECTION ───────────────────────────────────────────── */
.hero {
    min-height: calc(100vh - var(--navbar-height));
    display: flex;
    align-items: center;
    background: var(--surface-white);
    position: relative;
    overflow-x: clip;
    z-index: 1;
}

/* Diagonal blue panel behind the device image */
.hero::before {
    content: '';
    position: absolute;
    top: 0; right: 0;
    width: 52%; height: 100%;
    background: #EBF4FB;
    clip-path: polygon(10% 0, 100% 0, 100% 100%, 0% 100%);
    z-index: 0;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 6rem 3rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content { z-index: 2; order: 1; }

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    order: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--dark-blue);
    color: #fff;
    padding: 0.45rem 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    animation: fadeInUp 0.6s ease-out;
    border-radius: 3px;
}

.hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 1.25rem;
    color: var(--dark-blue);
    letter-spacing: -0.025em;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 520px;
    line-height: 1.7;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-cta-group {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 3rem;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}

/* Hero stats bar */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    animation: fadeInUp 0.6s ease-out 0.4s both;
    border: 1px solid var(--border-color);
    max-width: 580px;
}

.stat-item {
    text-align: left;
    padding: 1.25rem 1.5rem;
    border-right: 1px solid var(--border-color);
    background: #EBF4FB;
}

.stat-item:last-child { border-right: none; }

.stat-number {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary-blue);
    display: block;
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 400;
    margin-top: 0.125rem;
}

/* Device showcase */
.device-showcase { width: 100%; position: relative; animation: fadeInUp 0.8s ease-out; }

.device-screen {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Radial glow behind device image */
.device-screen::before {
    content: '';
    position: absolute;
    width: 560px;
    height: 560px;
    background: radial-gradient(circle,
        rgba(17,96,183,0.22) 0%,
        rgba(177,214,240,0.12) 45%,
        transparent 70%);
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    z-index: 0;
    animation: glowPulse 4.5s ease-in-out infinite;
}

.device-image {
    width: 85%;
    max-width: 480px;
    height: auto;
    object-fit: contain;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 32px 64px rgba(0,32,80,0.18))
            drop-shadow(0 8px 20px rgba(17,96,183,0.18));
    animation: deviceFloat 5s ease-in-out infinite;
}

.protected-media {
    user-select: none;
    -webkit-user-select: none;
    -webkit-user-drag: none;
    -webkit-touch-callout: none;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; transform: translate(-50%, -50%) scale(1); }
    50%       { opacity: 1;   transform: translate(-50%, -50%) scale(1.1); }
}

@keyframes deviceFloat {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-6px); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50%       { transform: scale(1.06); }
}

@keyframes pulseBackground {
    0%, 100% { opacity: 0.4; }
    50%       { opacity: 0.8; }
}


/* ── VIDEO DEMO SECTION ─────────────────────────────────────── */
.video-demo {
    padding: 5rem 0;
    background: var(--surface-medium);
    min-height: auto;
    display: block;
}

.video-demo .section-subtitle          { margin: 0 auto; }
.video-demo .section-subtitle .mobile-hide { display: inline; }
.video-demo .section-subtitle .mobile-show { display: none; }

.video-card {
    background: var(--surface-white);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    transition: box-shadow 0.2s;
}

.video-card:hover { box-shadow: var(--shadow-heavy); }

.video-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 */
    background: #000;
    overflow: hidden;
}

.video-wrapper iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    border: none;
}

.video-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    background: var(--surface-white);
    border-top: 1px solid var(--border-color);
}

.video-info-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 2rem;
    border-right: 1px solid var(--border-color);
}

.video-info-item:last-child { border-right: none; }

.video-info-item i {
    font-size: 1.375rem;
    color: var(--primary-blue);
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: var(--light-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.video-info-item h4 { font-size: 0.9375rem; font-weight: 600; color: var(--dark-blue); margin-bottom: 0.25rem; }
.video-info-item p  { font-size: 0.8125rem; color: var(--text-secondary); margin: 0; }


/* ── FEATURES SECTION ───────────────────────────────────────── */
.features { padding: 6rem 0; background: var(--surface-white); }

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
    gap: 1px;
    background: var(--border-color);
    border: 1px solid var(--border-color);
}

.feature-card {
    background: var(--surface-white);
    padding: 2.5rem;
    transition: background 0.15s;
    position: relative;
    overflow: hidden;
}

/* Top accent bar on hover */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--primary-blue);
    transform: scaleX(0);
    transition: transform 0.2s;
}

.feature-card:hover          { background: #EBF4FB; }
.feature-card:hover::before  { transform: scaleX(1); }

.feature-icon {
    width: 48px;
    height: 48px;
    background: var(--light-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--primary-blue);
    font-size: 1.375rem;
}

.feature-title       { font-size: 1.0625rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--dark-blue); }
.feature-description { color: var(--text-secondary); line-height: 1.6; font-size: 0.9375rem; }


/* ── TECHNOLOGY SECTION ─────────────────────────────────────── */
.technology { padding: 6rem 0; background: var(--surface-medium); }

.tech-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.tech-content { padding: 1rem 0; }

.tech-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--dark-blue);
    letter-spacing: -0.02em;
}

.tech-description { font-size: 1.0625rem; color: var(--text-secondary); margin-bottom: 2rem; line-height: 1.7; }

.tech-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    margin-bottom: 2.5rem;
    background: var(--border-color);
    border: 1px solid var(--border-color);
}

.metric-item { background: var(--surface-white); padding: 1.375rem 1.5rem; text-align: left; }

.metric-value { font-size: 1.75rem; font-weight: 700; color: var(--primary-blue); display: block; letter-spacing: -0.02em; }
.metric-label { font-size: 0.8125rem; color: var(--text-secondary); margin-top: 0.25rem; }

.tech-visual {
    position: relative;
    height: 460px;
    max-width: 560px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-diagram {
    width: 280px;
    height: 280px;
    position: relative;
    animation: rotate 25s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.diagram-element {
    position: absolute;
    width: 80px;
    height: 80px;
    background: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: var(--shadow-medium);
}

.diagram-element:nth-child(1) { top: -15%; left: 50%; transform: translateX(-50%); }
.diagram-element:nth-child(2) { top: 50%; right: -15%; transform: translateY(-50%); }
.diagram-element:nth-child(3) { bottom: -15%; left: 50%; transform: translateX(-50%); }
.diagram-element:nth-child(4) { top: 50%; left: -15%; transform: translateY(-50%); }
.diagram-element:nth-child(5) { top: 50%; left: 50%; transform: translate(-50%, -50%); background: var(--dark-blue); }


/* ── PRICING SECTION ────────────────────────────────────────── */
.pricing { padding: 6rem 0; background: var(--surface-white); }

.pricing-card {
    max-width: 580px;
    margin: 0 auto;
    background: var(--surface-white);
    border: 1px solid var(--border-dark);
    padding: 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

/* Blue top accent */
.pricing-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: var(--primary-blue);
}

.pricing-header { margin-bottom: 2rem; }
.pricing-title  { font-size: 1.25rem; font-weight: 600; margin-bottom: 1rem; color: var(--dark-blue); }

.pricing-price {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
    letter-spacing: -0.03em;
}

.pricing-currency { font-size: 1.375rem; vertical-align: top; font-weight: 600; }

.pricing-savings {
    background: var(--dark-blue);
    color: #fff;
    padding: 0.45rem 1rem;
    font-size: 0.8125rem;
    font-weight: 600;
    display: inline-block;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    border-radius: 3px;
}

.pricing-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.pricing-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: #EBF4FB;
    font-size: 0.875rem;
}

.pricing-feature i   { color: var(--primary-blue); flex-shrink: 0; }
.pricing-feature img { width: 1rem; height: 1rem; }


/* ── APPLICATIONS SECTION ───────────────────────────────────── */
.applications { padding: 6rem 0; background: var(--surface-medium); }

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.app-card {
    background: var(--surface-white);
    padding: 2.5rem;
    text-align: center;
    transition: background 0.15s;
    position: relative;
}

/* Top accent bar on hover */
.app-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--primary-blue);
    transform: scaleX(0);
    transition: transform 0.2s;
}

.app-card:hover         { background: #EBF4FB; }
.app-card:hover::before { transform: scaleX(1); }

.app-icon {
    width: 64px;
    height: 64px;
    background: var(--light-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--primary-blue);
    font-size: 1.75rem;
}

.app-title       { font-size: 1.0625rem; font-weight: 600; margin-bottom: 0.75rem; color: var(--dark-blue); }
.app-description { color: var(--text-secondary); line-height: 1.6; font-size: 0.9375rem; }


/* ── CONTACT SECTION ────────────────────────────────────────── */
.contact { padding: 6rem 0; background: var(--surface-white); }

.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info { padding: 1rem 0; }

.contact-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1.25rem;
    color: var(--dark-blue);
    letter-spacing: -0.02em;
}

.contact-description { font-size: 1.125rem; color: var(--text-secondary); margin-bottom: 2rem; line-height: 1.7; }

.contact-details { display: flex; flex-direction: column; gap: 1.5rem; }

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--surface-light);
    border-radius: var(--border-radius-md);
    border-left: 4px solid var(--primary-blue);
}

.contact-item-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: #1160B7;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.contact-item-content          { flex: 1; }
.contact-item-content h4       { font-weight: 600; margin-bottom: 0.25rem; color: var(--dark-blue); }
.contact-item-content p        { color: var(--text-secondary); font-size: 0.9rem; word-break: break-word; }

/* Contact form */
.contact-form {
    background: var(--surface-white);
    border: 1px solid var(--border-dark);
    padding: 3rem;
    box-shadow: var(--shadow-medium);
}

.form-group { margin-bottom: 1.5rem; }

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark-blue);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 2px solid rgba(0, 102, 204, 0.1);
    border-radius: var(--border-radius-sm);
    font-size: 1rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--surface-white);
    min-height: 48px;
    font-family: inherit;
    color: var(--text-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-submit {
    width: 100%;
    background: var(--primary-blue);
    color: white;
    padding: 1.25rem;
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    box-shadow: var(--shadow-medium);
    min-height: 48px;
    font-family: inherit;
}

.form-submit:hover { background: var(--pressed-blue); }


/* ── Dark Mode Overrides ───────────────────────────────────── */
body.dark-mode .hero::before,
body.dark-mode .stat-item,
body.dark-mode .pricing-feature,
body.dark-mode .feature-card:hover,
body.dark-mode .app-card:hover {
    background: #172230;
}

body.dark-mode .contact-item-icon {
    background: #223448;
}

body.dark-mode .form-group input,
body.dark-mode .form-group textarea {
    background: #141c27;
    border-color: var(--border-color);
}

body.dark-mode .form-group input:focus,
body.dark-mode .form-group textarea:focus {
    box-shadow: 0 0 0 3px rgba(105, 174, 248, 0.22);
}

body.dark-mode .device-image {
    filter: drop-shadow(0 32px 64px rgba(0,0,0,0.45))
            drop-shadow(0 8px 20px rgba(105,174,248,0.18));
}


/* ── RESPONSIVE OVERRIDES ───────────────────────────────────── */
@media (max-width: 768px) {
    /* Video demo */
    .video-demo { padding: 3rem 0; min-height: auto; }
    .video-demo .section-subtitle .mobile-hide { display: none; }
    .video-demo .section-subtitle .mobile-show { display: inline; }

    /* Hero */
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
        padding: 3rem 1.5rem;
    }

    .hero::before  { display: none; }
    .hero-content  { order: 1; }
    .hero-visual   { order: 2; }

    .device-showcase            { max-width: 100%; }
    .device-screen              { min-height: 320px; }
    .device-screen::before      { width: 320px; height: 320px; }

    .hero-stats                 { grid-template-columns: repeat(3, 1fr); }
    .stat-item                  { padding: 1rem 0.75rem; text-align: center; }
    .stat-number                { font-size: 1.375rem; }
    .stat-label                 { font-size: 0.75rem; }

    .hero-cta-group             { flex-direction: column; align-items: center; }

    /* Video info */
    .video-info                 { grid-template-columns: 1fr; }
    .video-info-item            { border-right: none; border-bottom: 1px solid var(--border-color); }
    .video-info-item:last-child { border-bottom: none; }

    /* Technology & Contact */
    .tech-showcase,
    .contact-container          { grid-template-columns: 1fr; gap: 2.5rem; }

    /* Tech diagram */
    .tech-metrics               { grid-template-columns: 1fr 1fr; }
    .tech-visual                { height: 280px; }
    .tech-diagram               { width: 220px; height: 220px; }
    .diagram-element            { width: 68px; height: 68px; font-size: 1.25rem; }

    /* Pricing */
    .pricing-features           { grid-template-columns: 1fr; }

    /* Grids → stacked */
    .features-grid              { grid-template-columns: 1fr; background: none; border: none; gap: 1px; }
    .apps-grid                  { grid-template-columns: 1fr; background: none; border: none; gap: 1px; }
}

@media (max-width: 480px) {
    .features, .technology, .pricing, .applications, .contact { padding: 4rem 0; }
    .video-demo { padding: 2.5rem 0; }

    .hero-stats    { gap: 0; }
    .stat-item     { padding: 0.875rem 0.5rem; }
    .stat-number   { font-size: 1.25rem; }
    .stat-label    { font-size: 0.6875rem; }

    .tech-visual   { height: 260px; }
    .tech-diagram  { width: 180px; height: 180px; }
    .diagram-element { width: 56px; height: 56px; font-size: 1rem; }
}