/* ==========================================================================
   Razvoj aplikacij — dedicated visual system ("spec sheet" / blueprint)
   Scoped entirely under body.landing-appdev so it never touches other pages
   that share assets/css/style.css.
   ========================================================================== */

body.landing-appdev {
    --rd-ink: #12181f;
    --rd-panel: #1a222b;
    --rd-panel-2: #212b36;
    --rd-line: #3a4b5c;
    --rd-line-soft: rgba(58, 75, 92, 0.45);
    --rd-paper: #ffffff;
    --rd-paper-line: rgba(27, 34, 41, 0.14);
    --rd-signal: #4F86F7;
    --rd-signal-strong: #3a6fdb;
    --rd-text-on-ink: #ffffff;
    --rd-text-on-ink-muted: #8fa0b0;
    --rd-text-on-paper: #1b2229;
    --rd-text-on-paper-muted: #5b6672;
    --rd-font-display: 'Space Grotesk', sans-serif;
    --rd-font-body: 'IBM Plex Sans', sans-serif;

    background: var(--rd-ink);
}

body.landing-appdev main {
    font-family: var(--rd-font-body);
    color: var(--rd-text-on-ink);
    overflow-x: hidden;
}

body.landing-appdev main h1,
body.landing-appdev main h2,
body.landing-appdev main h3 {
    font-family: var(--rd-font-display);
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.12;
}

body.landing-appdev main p {
    line-height: 1.7;
}

body.landing-appdev main a {
    font-family: var(--rd-font-body);
}

/* Structural rule — the page's recurring device: every major section opens
   with a short measurement line above the heading, like a spec sheet. */
body.landing-appdev .rd-tick {
    position: relative;
    padding-top: 1.1rem;
}
body.landing-appdev .rd-tick::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    width: 2.5rem;
    height: 2px;
    background: var(--rd-signal);
}

body.landing-appdev .rd-container {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* --------------------------------------------------------------------
   HERO
   -------------------------------------------------------------------- */
body.landing-appdev .rd-hero {
    background: var(--rd-ink);
    padding: 7.5rem 0 5rem;
    border-bottom: 1px solid var(--rd-line-soft);
}

body.landing-appdev .rd-hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    gap: 3.5rem;
    align-items: center;
}

body.landing-appdev .rd-hero-eyebrow {
    color: var(--rd-text-on-ink-muted);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    max-width: 30ch;
}

body.landing-appdev .rd-hero h1 {
    font-size: clamp(2.4rem, 4.4vw, 3.75rem);
    color: var(--rd-text-on-ink);
    max-width: 16ch;
    margin: 0 0 1.5rem;
}

body.landing-appdev .rd-hero-text {
    font-size: 1.09rem;
    color: var(--rd-text-on-ink-muted);
    max-width: 46ch;
    margin: 0 0 2.25rem;
}

body.landing-appdev .rd-hero-actions {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

body.landing-appdev .rd-btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    background: var(--rd-signal);
    color: #ffffff;
    font-family: var(--rd-font-display);
    font-weight: 600;
    font-size: 0.98rem;
    padding: 0.95rem 1.6rem;
    text-decoration: none;
    border-radius: 999px;
    transition: background 0.18s ease, transform 0.18s ease;
}
body.landing-appdev .rd-btn-primary:hover {
    background: var(--rd-signal-strong);
    transform: translateY(-1px);
}

body.landing-appdev .rd-link-secondary {
    color: var(--rd-text-on-ink);
    text-decoration: none;
    font-size: 0.98rem;
    padding-bottom: 2px;
    background-image: linear-gradient(var(--rd-text-on-ink), var(--rd-text-on-ink));
    background-position: 0 100%;
    background-repeat: no-repeat;
    background-size: 0% 1px;
    transition: background-size 0.25s ease;
}
body.landing-appdev .rd-link-secondary:hover {
    background-size: 100% 1px;
}

/* Hero schematic — replaces the fake dashboard-card mockup */
body.landing-appdev .rd-hero-diagram {
    position: relative;
    border: 1px solid var(--rd-line-soft);
    background: var(--rd-panel);
    padding: 1.75rem 1.5rem 1.5rem;
}

body.landing-appdev .rd-hero-diagram-label {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--rd-text-on-ink-muted);
    border-bottom: 1px solid var(--rd-line-soft);
    padding-bottom: 0.75rem;
    margin-bottom: 1.25rem;
}

body.landing-appdev .rd-schematic svg {
    width: 100%;
    height: auto;
    display: block;
}

body.landing-appdev .rd-schematic .rd-node-loose rect,
body.landing-appdev .rd-schematic .rd-node-loose circle {
    fill: var(--rd-panel-2);
    stroke: var(--rd-line);
}
body.landing-appdev .rd-schematic .rd-node-loose text {
    fill: var(--rd-text-on-ink-muted);
    font-family: var(--rd-font-body);
}

body.landing-appdev .rd-schematic .rd-connector {
    fill: none;
    stroke: var(--rd-line);
    stroke-width: 1.4;
    stroke-dasharray: 240;
    stroke-dashoffset: 240;
    animation: rd-draw 1.6s ease forwards 0.3s;
}

body.landing-appdev .rd-schematic .rd-system rect {
    fill: var(--rd-ink);
    stroke: var(--rd-signal);
    stroke-width: 1.6;
}
body.landing-appdev .rd-schematic .rd-system text {
    fill: var(--rd-text-on-ink);
    font-family: var(--rd-font-display);
    font-weight: 600;
}
body.landing-appdev .rd-schematic .rd-system-step {
    fill: var(--rd-text-on-ink-muted);
    font-family: var(--rd-font-body);
    font-size: 6.5px;
}
body.landing-appdev .rd-schematic .rd-system-arrow {
    stroke: var(--rd-text-on-ink-muted);
    stroke-width: 1;
}

@keyframes rd-draw {
    to { stroke-dashoffset: 0; }
}

@media (prefers-reduced-motion: reduce) {
    body.landing-appdev .rd-schematic .rd-connector {
        animation: none;
        stroke-dashoffset: 0;
    }
}

/* --------------------------------------------------------------------
   PROOF STRIP — flat row, hairline dividers, no cards/shadows
   -------------------------------------------------------------------- */
body.landing-appdev .rd-proof {
    background: var(--rd-ink);
    border-bottom: 1px solid var(--rd-line-soft);
}
body.landing-appdev .rd-proof-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}
body.landing-appdev .rd-proof-item {
    padding: 2rem 2rem;
    border-left: 1px solid var(--rd-line-soft);
}
body.landing-appdev .rd-proof-item:first-child { border-left: none; }
body.landing-appdev .rd-proof-item strong {
    display: block;
    font-family: var(--rd-font-display);
    font-size: 1.05rem;
    color: var(--rd-text-on-ink);
    margin-bottom: 0.5rem;
}
body.landing-appdev .rd-proof-item p {
    color: var(--rd-text-on-ink-muted);
    font-size: 0.95rem;
    margin: 0;
    max-width: 32ch;
}

/* --------------------------------------------------------------------
   Shared section rhythm on the paper surface
   -------------------------------------------------------------------- */
body.landing-appdev .rd-section {
    padding: 5.5rem 0;
}
body.landing-appdev .rd-section-paper {
    background: var(--rd-paper);
    color: var(--rd-text-on-paper);
}
body.landing-appdev .rd-section-ink {
    background: var(--rd-ink);
    color: var(--rd-text-on-ink);
    border-top: 1px solid var(--rd-line-soft);
}

body.landing-appdev .rd-section-head {
    max-width: 60ch;
    margin-bottom: 3rem;
}
body.landing-appdev .rd-section-paper .rd-section-head h2 {
    color: var(--rd-text-on-paper);
}
body.landing-appdev .rd-section-ink .rd-section-head h2 {
    color: var(--rd-text-on-ink);
}
body.landing-appdev .rd-section-head h2 {
    font-size: clamp(1.7rem, 2.6vw, 2.35rem);
    margin: 0 0 0.9rem;
}
body.landing-appdev .rd-section-paper .rd-section-head p {
    color: var(--rd-text-on-paper-muted);
}
body.landing-appdev .rd-section-ink .rd-section-head p {
    color: var(--rd-text-on-ink-muted);
}
body.landing-appdev .rd-section-head p {
    font-size: 1.02rem;
    margin: 0;
}

/* --------------------------------------------------------------------
   ZAKAJ MI — benefits as a bordered 2x2 ledger, not raised cards
   -------------------------------------------------------------------- */
body.landing-appdev .rd-benefit-layout {
    display: grid;
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    gap: 3rem;
    align-items: start;
}
body.landing-appdev .rd-benefit-copy h2 {
    font-size: clamp(1.7rem, 2.6vw, 2.35rem);
    margin: 0 0 1rem;
    color: var(--rd-text-on-paper);
}
body.landing-appdev .rd-benefit-copy p {
    color: var(--rd-text-on-paper-muted);
    max-width: 40ch;
}
body.landing-appdev .rd-benefit-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-top: 1px solid var(--rd-paper-line);
    border-left: 1px solid var(--rd-paper-line);
}
body.landing-appdev .rd-benefit-item {
    padding: 1.75rem 1.75rem;
    border-right: 1px solid var(--rd-paper-line);
    border-bottom: 1px solid var(--rd-paper-line);
}
body.landing-appdev .rd-benefit-item i {
    color: var(--rd-signal-strong);
    font-size: 1.15rem;
    margin-bottom: 0.9rem;
    display: block;
}
body.landing-appdev .rd-benefit-item strong {
    display: block;
    font-family: var(--rd-font-display);
    font-size: 1.02rem;
    margin-bottom: 0.4rem;
    color: var(--rd-text-on-paper);
}
body.landing-appdev .rd-benefit-item p {
    margin: 0;
    font-size: 0.94rem;
    color: var(--rd-text-on-paper-muted);
}

/* --------------------------------------------------------------------
   RESITVE — catalog list instead of icon tiles
   -------------------------------------------------------------------- */
body.landing-appdev .rd-solution-list {
    border-top: 1px solid var(--rd-line-soft);
}
body.landing-appdev .rd-solution-row {
    display: grid;
    grid-template-columns: 2.5rem minmax(0, 15rem) minmax(0, 1fr) auto;
    align-items: center;
    gap: 1.5rem;
    padding: 1.6rem 0;
    border-bottom: 1px solid var(--rd-line-soft);
}
body.landing-appdev .rd-solution-row i {
    color: var(--rd-signal);
    font-size: 1.15rem;
}
body.landing-appdev .rd-solution-row h3 {
    font-size: 1.15rem;
    margin: 0;
    color: var(--rd-text-on-ink);
}
body.landing-appdev .rd-solution-row p {
    margin: 0;
    color: var(--rd-text-on-ink-muted);
    font-size: 0.95rem;
}
body.landing-appdev .rd-solution-row .rd-solution-link {
    color: var(--rd-text-on-ink);
    text-decoration: none;
    font-size: 0.92rem;
    white-space: nowrap;
    border-bottom: 1px solid var(--rd-line);
    padding-bottom: 2px;
    transition: border-color 0.18s ease, color 0.18s ease;
}
body.landing-appdev .rd-solution-row .rd-solution-link:hover {
    color: var(--rd-signal);
    border-color: var(--rd-signal);
}

/* --------------------------------------------------------------------
   TEHNOLOGIJA — restyle existing tab/orbit structure (classes kept for JS)
   -------------------------------------------------------------------- */
body.landing-appdev .tech-showcase {
    position: relative;
}
body.landing-appdev .tech-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0;
    position: relative;
    width: auto;
    max-width: none;
    justify-content: flex-start;
    padding: 0;
    background: none;
    border: none;
    border-bottom: 1px solid var(--rd-paper-line);
    border-radius: 0;
    margin: 0 0 2.5rem;
}
body.landing-appdev .tech-tab {
    position: relative;
    background: none;
    border: none;
    border-radius: 0;
    font-family: var(--rd-font-body);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--rd-text-on-paper-muted);
    padding: 0.9rem 1.4rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
body.landing-appdev .tech-tab:first-child { padding-left: 0; }
body.landing-appdev .tech-tab i,
body.landing-appdev .tech-tab.is-active i {
    color: var(--rd-text-on-paper-muted);
}
body.landing-appdev .tech-tab.is-active {
    color: var(--rd-text-on-paper);
}
body.landing-appdev .tech-tab-indicator {
    position: absolute;
    top: auto;
    bottom: -1px;
    left: 0;
    height: 2px;
    width: 0;
    background: var(--rd-signal-strong);
    border-radius: 0;
    box-shadow: none;
    transition: transform 0.25s ease, width 0.25s ease;
}
body.landing-appdev .tech-panel {
    display: none;
}
body.landing-appdev .tech-panel.is-active {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
    padding-top: 0.5rem;
}
body.landing-appdev .rd-tech-desc {
    font-size: 1.1rem;
    color: var(--rd-text-on-paper);
    max-width: 32ch;
    margin: 0;
}
body.landing-appdev .rd-tech-stack {
    list-style: none;
    margin: 0;
    padding: 0;
    border-top: 1px solid var(--rd-paper-line);
}
body.landing-appdev .rd-tech-stack li {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--rd-paper-line);
    font-size: 0.98rem;
    color: var(--rd-text-on-paper);
}
body.landing-appdev .rd-tech-stack i {
    width: 1.4rem;
    color: var(--rd-signal-strong);
    font-size: 1.05rem;
    text-align: center;
}

/* --------------------------------------------------------------------
   PRISTOPI — bordered ledger list, one accented row (not scaled/shadowed)
   -------------------------------------------------------------------- */
body.landing-appdev .rd-approach-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--rd-line-soft);
    border-left: 1px solid var(--rd-line-soft);
}
body.landing-appdev .rd-approach-item {
    border-right: 1px solid var(--rd-line-soft);
    border-bottom: 1px solid var(--rd-line-soft);
    padding: 1.75rem 1.5rem;
    display: flex;
    flex-direction: column;
}
body.landing-appdev .rd-approach-item.is-featured {
    background: var(--rd-panel);
    outline: 1.5px solid var(--rd-signal);
    outline-offset: -1.5px;
    position: relative;
    z-index: 1;
}
body.landing-appdev .rd-approach-tag {
    font-size: 0.82rem;
    color: var(--rd-signal);
    margin-bottom: 0.75rem;
}
body.landing-appdev .rd-approach-item h3 {
    font-size: 1.08rem;
    margin: 0 0 0.6rem;
    color: var(--rd-text-on-ink);
}
body.landing-appdev .rd-approach-item p {
    font-size: 0.92rem;
    color: var(--rd-text-on-ink-muted);
    margin: 0 0 1.5rem;
    flex-grow: 1;
}
body.landing-appdev .rd-approach-item a {
    color: var(--rd-text-on-ink);
    text-decoration: none;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--rd-line);
    padding-bottom: 2px;
    align-self: flex-start;
}
body.landing-appdev .rd-approach-item a:hover {
    color: var(--rd-signal);
    border-color: var(--rd-signal);
}

/* --------------------------------------------------------------------
   PROCES — genuine sequence: ghost numerals + measurement line
   -------------------------------------------------------------------- */
body.landing-appdev .rd-timeline {
    position: relative;
    padding-left: 1.5rem;
}
body.landing-appdev .rd-timeline-track {
    position: absolute;
    left: 0;
    top: 0.5rem;
    bottom: 0.5rem;
    width: 1px;
    background: var(--rd-paper-line);
}
body.landing-appdev .rd-timeline-track-fill {
    width: 100%;
    height: 0%;
    background: var(--rd-signal-strong);
}
body.landing-appdev .rd-timeline-item {
    position: relative;
    display: grid;
    grid-template-columns: 4.8rem minmax(0, 1fr);
    gap: 1.5rem;
    padding: 1.75rem 0;
}
body.landing-appdev .rd-timeline-marker {
    width: auto;
    height: auto;
    border: none;
    border-radius: 0;
    background: none;
    display: block;
    font-family: var(--rd-font-display);
    font-size: 2.4rem;
    font-weight: 600;
    color: rgba(27, 34, 41, 0.18);
    line-height: 1;
    transition: color 0.3s ease;
}
body.landing-appdev .rd-timeline-item.is-active .rd-timeline-marker {
    background: none;
    border-color: transparent;
    transform: none;
    box-shadow: none;
    color: var(--rd-signal-strong);
}
body.landing-appdev .rd-timeline-content {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    box-shadow: none;
}
body.landing-appdev .rd-timeline-item.is-active .rd-timeline-content {
    border-color: transparent;
    box-shadow: none;
}
body.landing-appdev .rd-timeline-content h3 {
    font-size: 1.1rem;
    margin: 0 0 0.4rem;
    color: var(--rd-text-on-paper);
}
body.landing-appdev .rd-timeline-content p {
    margin: 0;
    font-size: 0.96rem;
    color: var(--rd-text-on-paper-muted);
    max-width: 46ch;
}

/* --------------------------------------------------------------------
   USE CASE — quiet ink panel, no big centered icon
   -------------------------------------------------------------------- */
body.landing-appdev .rd-case-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: var(--rd-line-soft);
    border: 1px solid var(--rd-line-soft);
}
body.landing-appdev .rd-case {
    background: var(--rd-ink);
    padding: 2rem;
    display: flex;
    flex-direction: column;
}
body.landing-appdev .rd-case-badge {
    display: inline-block;
    font-size: 0.85rem;
    color: var(--rd-signal);
    margin-bottom: 1rem;
}
body.landing-appdev .rd-case h3 {
    font-size: 1.2rem;
    color: var(--rd-text-on-ink);
    margin: 0 0 1.1rem;
}
body.landing-appdev .rd-case p {
    color: var(--rd-text-on-ink-muted);
    margin: 0 0 0.9rem;
    font-size: 0.94rem;
}
body.landing-appdev .rd-case p strong {
    color: var(--rd-text-on-ink);
}
body.landing-appdev .rd-case a {
    color: var(--rd-text-on-ink);
    text-decoration: none;
    border-bottom: 1px solid var(--rd-line);
    padding-bottom: 2px;
    display: inline-block;
    margin-top: auto;
    align-self: flex-start;
    font-size: 0.92rem;
}
body.landing-appdev .rd-case a:hover {
    color: var(--rd-signal);
    border-color: var(--rd-signal);
}

/* --------------------------------------------------------------------
   COMPARISON TABLE — restyled to match the ledger system
   -------------------------------------------------------------------- */
body.landing-appdev .rd-table-wrap {
    overflow-x: auto;
    border: 1px solid var(--rd-paper-line);
}
body.landing-appdev .rd-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 640px;
}
body.landing-appdev .rd-table th,
body.landing-appdev .rd-table td {
    padding: 1rem 1.25rem;
    text-align: left;
    font-size: 0.92rem;
    border-bottom: 1px solid var(--rd-paper-line);
}
body.landing-appdev .rd-table thead th {
    font-family: var(--rd-font-display);
    font-weight: 600;
    color: var(--rd-text-on-paper);
    border-bottom: 1px solid var(--rd-text-on-paper);
}
body.landing-appdev .rd-table tbody th {
    color: var(--rd-text-on-paper-muted);
    font-weight: 500;
}
body.landing-appdev .rd-table td {
    color: var(--rd-text-on-paper-muted);
}
body.landing-appdev .rd-table .rd-highlight-col {
    background: rgba(79, 134, 247, 0.08);
    color: var(--rd-text-on-paper);
    font-weight: 500;
}

/* --------------------------------------------------------------------
   FAQ
   -------------------------------------------------------------------- */
body.landing-appdev .rd-faq-list {
    border-top: 1px solid var(--rd-line-soft);
    max-width: 74ch;
}
body.landing-appdev .rd-faq-item {
    border-bottom: 1px solid var(--rd-line-soft);
    padding: 0;
}
body.landing-appdev .rd-faq-trigger {
    width: 100%;
    padding: 1.35rem 0;
    background: none;
    border: none;
    outline: none;
    font-family: var(--rd-font-display);
    font-size: 1.02rem;
    text-align: left;
    color: var(--rd-text-on-ink);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}
body.landing-appdev .rd-faq-trigger:focus-visible {
    outline: 2px solid var(--rd-signal);
    outline-offset: 2px;
}
body.landing-appdev .rd-faq-trigger::after {
    content: "+";
    font-size: 1.3rem;
    color: var(--rd-signal);
    flex-shrink: 0;
    transition: transform 0.25s ease;
}
body.landing-appdev .rd-faq-item.is-open .rd-faq-trigger::after {
    transform: rotate(135deg);
}
body.landing-appdev .rd-faq-answer {
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease;
}
body.landing-appdev .rd-faq-answer p {
    margin: 0;
    padding: 0 0 1.5rem;
    color: var(--rd-text-on-ink-muted);
    max-width: 60ch;
}

/* --------------------------------------------------------------------
   CONTACT FORM
   -------------------------------------------------------------------- */
body.landing-appdev .rd-contact-form {
    max-width: 640px;
    margin: 0 auto;
    background: var(--rd-paper) !important;
    padding: 2.5rem;
}
body.landing-appdev .rd-contact-form .form-title {
    font-family: var(--rd-font-display);
    font-size: 1.1rem;
    margin: 0 0 1.5rem;
    color: var(--rd-text-on-paper);
}
body.landing-appdev .rd-contact-form label {
    font-size: 0.88rem;
    color: var(--rd-text-on-paper-muted);
}
body.landing-appdev .rd-contact-form .form-privacy {
    color: var(--rd-text-on-paper-muted);
}
body.landing-appdev .rd-contact-form .form-privacy a {
    color: var(--rd-text-on-paper);
    text-decoration: underline;
}
body.landing-appdev .rd-contact-form .checkbox-container {
    background: transparent;
    border: none;
    border-radius: 0;
    padding: 0;
    min-height: 0;
}
body.landing-appdev .rd-contact-form input,
body.landing-appdev .rd-contact-form select,
body.landing-appdev .rd-contact-form textarea {
    font-family: var(--rd-font-body);
    background-color: var(--rd-paper) !important;
    border: 1.5px solid var(--rd-text-on-paper) !important;
    border-radius: 10px !important;
    color: var(--rd-text-on-paper) !important;
}
body.landing-appdev .rd-contact-form input::placeholder,
body.landing-appdev .rd-contact-form textarea::placeholder {
    color: var(--rd-text-on-paper-muted);
}
body.landing-appdev .rd-contact-form select {
    color-scheme: light;
}
body.landing-appdev .rd-contact-form input:focus,
body.landing-appdev .rd-contact-form select:focus,
body.landing-appdev .rd-contact-form textarea:focus {
    outline: 2px solid var(--rd-signal);
    outline-offset: 1px;
    border-color: var(--rd-signal) !important;
}
body.landing-appdev .rd-submit {
    background: var(--rd-signal);
    color: #ffffff;
    font-family: var(--rd-font-display);
    font-weight: 600;
    border: none;
    border-radius: 999px;
    padding: 1rem;
    cursor: pointer;
    width: 100%;
    transition: background 0.18s ease;
}
body.landing-appdev .rd-submit:hover {
    background: var(--rd-signal-strong);
    color: #ffffff;
}

/* --------------------------------------------------------------------
   FINAL CTA
   -------------------------------------------------------------------- */
body.landing-appdev .rd-final-cta {
    background: var(--rd-ink);
    color: #ffffff;
}
body.landing-appdev .rd-final-cta h2 {
    font-size: clamp(1.6rem, 2.6vw, 2.2rem);
    color: #ffffff;
    max-width: 22ch;
    margin: 0 0 1rem;
}
body.landing-appdev .rd-final-cta p {
    color: rgba(255, 255, 255, 0.65);
    max-width: 52ch;
    margin: 0 0 2rem;
}
body.landing-appdev .rd-final-actions {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}
body.landing-appdev .rd-btn-dark {
    display: inline-flex;
    align-items: center;
    background: var(--rd-signal);
    color: #ffffff;
    font-family: var(--rd-font-display);
    font-weight: 600;
    padding: 0.95rem 1.6rem;
    text-decoration: none;
    border-radius: 999px;
}
body.landing-appdev .rd-btn-dark:hover {
    background: var(--rd-signal-strong);
}
body.landing-appdev .rd-phone-link {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.35);
    padding-bottom: 2px;
}

body.landing-appdev .mobile-sticky-cta {
    background: var(--rd-signal);
    color: #0a1830;
    font-family: var(--rd-font-display);
    font-weight: 600;
}

/* --------------------------------------------------------------------
   RESPONSIVE
   -------------------------------------------------------------------- */
@media (max-width: 960px) {
    body.landing-appdev .rd-hero-grid { grid-template-columns: minmax(0, 1fr); }
    body.landing-appdev .rd-proof-grid { grid-template-columns: minmax(0, 1fr); }
    body.landing-appdev .rd-proof-item { border-left: none; border-top: 1px solid var(--rd-line-soft); }
    body.landing-appdev .rd-proof-item:first-child { border-top: none; }
    body.landing-appdev .rd-benefit-layout { grid-template-columns: minmax(0, 1fr); }
    body.landing-appdev .rd-benefit-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
    body.landing-appdev .rd-solution-row {
        grid-template-columns: 2rem minmax(0, 1fr);
        grid-template-areas: "icon title" ". desc" ". link";
        row-gap: 0.4rem;
    }
    body.landing-appdev .rd-solution-row i { grid-area: icon; }
    body.landing-appdev .rd-solution-row h3 { grid-area: title; }
    body.landing-appdev .rd-solution-row p { grid-area: desc; }
    body.landing-appdev .rd-solution-row .rd-solution-link { grid-area: link; justify-self: start; }
    body.landing-appdev .tech-panel.is-active { grid-template-columns: minmax(0, 1fr); }
    body.landing-appdev .rd-approach-list { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
    body.landing-appdev .rd-case-grid { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 600px) {
    body.landing-appdev .rd-hero { padding: 6rem 0 3.5rem; }
    body.landing-appdev .rd-approach-list { grid-template-columns: 1fr; }
    body.landing-appdev .rd-contact-form { padding: 1.75rem 1.25rem; }
    body.landing-appdev .rd-case { padding: 1.75rem; }
}