/* ── Theme tokens ── */
:root {
    --bg-body: radial-gradient(circle at top, rgba(96, 165, 250, .12), transparent 28%),
        radial-gradient(circle at 15% 20%, rgba(236, 72, 153, .12), transparent 18%),
        linear-gradient(180deg, #020617 0%, #090f1f 100%);
    --bg-nav: rgba(2, 6, 23, 0.90);
    --bg-panel: rgba(15, 23, 42, 0.88);
    --bg-card: rgba(15, 23, 42, 0.80);
    --bg-form: rgba(2, 6, 23, 0.90);
    --border: rgba(148, 163, 184, 0.16);
    --border-card: rgba(30, 41, 59, 1);
    --text-base: #f1f5f9;
    --text-soft: #94a3b8;
    --text-muted: #64748b;
    --hero-glow: rgba(99, 102, 241, 0.18);
}

html[data-theme="light"] {
    --bg-body: radial-gradient(circle at top, rgba(99, 102, 241, .08), transparent 28%),
        radial-gradient(circle at 15% 20%, rgba(236, 72, 153, .07), transparent 18%),
        linear-gradient(180deg, #f8fafc 0%, #e2e8f0 100%);
    --bg-nav: rgba(255, 255, 255, 0.92);
    --bg-panel: rgba(255, 255, 255, 0.90);
    --bg-card: rgba(248, 250, 252, 0.95);
    --bg-form: rgba(255, 255, 255, 0.95);
    --border: rgba(99, 102, 241, 0.18);
    --border-card: rgba(203, 213, 225, 1);
    --text-base: #0f172a;
    --text-soft: #475569;
    --text-muted: #64748b;
    --hero-glow: rgba(99, 102, 241, 0.10);
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg-body);
    color: var(--text-base);
    transition: background 0.35s, color 0.35s;
}

html[data-theme="light"] body {
    background-color: #f1f5f9;
}

@keyframes glowFlicker {

    0%,
    100% {
        box-shadow: 9px 10px 50px 0px rgba(124, 58, 237, 0.64);
    }

    25% {
        box-shadow: 12px 8px 55px 2px rgba(124, 58, 237, 0.70);
    }

    50% {
        box-shadow: 6px 13px 48px 1px rgba(124, 58, 237, 0.68);
    }

    75% {
        box-shadow: 10px 7px 52px 0px rgba(124, 58, 237, 0.66);
    }
}

/* ── Interactive panel: shared hover, glow & border-draw effects ── */
[data-interactive-panel] {
    position: relative;
    isolation: isolate;
    border: 1px solid var(--border-card);
    transition: transform 0.3s ease, background-color 0.35s, border-color 0.35s, box-shadow 0.35s;
    animation: glowFlicker 8s ease-in-out infinite;
    will-change: transform;
}

[data-interactive-panel]:hover {
    transform: scale(1.02);
}

/* Compose transforms when panel is also a stagger-item */
.stagger.in-view>[data-interactive-panel].stagger-item:hover {
    transform: translateY(0) scale(1.02);
}

.hero-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(18px);
}

/* ── Light-theme card / form overrides ── */
html[data-theme="light"] .hero-panel,
html[data-theme="light"] [class*="bg-slate-9"],
html[data-theme="light"] [class*="bg-slate-950"] {
    background: var(--bg-card) !important;
    border-color: var(--border-card) !important;
}

html[data-theme="light"] [class*="shadow-glow"],
html[data-theme="light"] .hero-panel,
html[data-theme="light"] [data-interactive-panel] {
    box-shadow: 0 8px 32px rgba(100, 116, 139, 0.12) !important;
    animation: none !important;
}

html[data-theme="light"] [class*="text-slate-4"] {
    color: var(--text-soft) !important;
}

html[data-theme="light"] [class*="text-slate-3"] {
    color: var(--text-soft) !important;
}

html[data-theme="light"] [class*="text-slate-1"] {
    color: var(--text-base) !important;
}

html[data-theme="light"] [class*="text-white"] {
    color: var(--text-base) !important;
}

/* Keep white text on gradient/coloured buttons */
html[data-theme="light"] [class*="from-indigo"][class*="text-white"],
html[data-theme="light"] [class*="bg-gradient"][class*="text-white"] {
    color: #fff !important;
}

/* Ghost / outline buttons in light mode */
html[data-theme="light"] [class*="border-slate-7"][class*="bg-slate-9"] {
    background: transparent !important;
    border-color: #94a3b8 !important;
    color: var(--text-base) !important;
}

/* ── Rate toggle buttons ── */
.button-rate-active {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    padding: 1rem 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.35em;
    color: #fff;
    background: linear-gradient(to right, #6366f1, #0ea5e9);
    box-shadow: 0 0 18px rgba(99, 102, 241, 0.55), 0 0 36px rgba(14, 165, 233, 0.3);
    transition: filter 0.3s ease;
}

.button-rate-active:hover {
    filter: brightness(1.1);
}

.button-rate-inactive {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 9999px;
    padding: 1rem 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.35em;
    color: #cbd5e1;
    border: 1px solid #334155;
    background: rgba(15, 23, 42, 0.9);
    transition: color 0.3s ease, border-color 0.3s ease;
}

.button-rate-inactive:hover {
    color: #fff;
    border-color: #64748b;
}

/* Light-mode overrides for rate buttons */
html[data-theme="light"] .button-rate-active {
    color: #fff !important;
    background: linear-gradient(to right, #6366f1, #0ea5e9) !important;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4) !important;
}

html[data-theme="light"] .button-rate-inactive {
    color: #475569 !important;
    border-color: #94a3b8 !important;
    background: transparent !important;
}

html[data-theme="light"] .button-rate-inactive:hover {
    color: #1e293b !important;
    border-color: #475569 !important;
}

/* Rate panel visibility transitions */
[data-rate]:not(button) {
    transition: opacity 0.35s ease, transform 0.35s ease;
}

[data-rate].rate-panel-no-transition {
    transition: none !important;
}

/* Use :not(#fake) to increase specificity over stagger-item */
[data-rate].rate-panel-visible:not(#fake) {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    display: revert;
}

[data-rate].rate-panel-hidden:not(#fake) {
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
}

[data-rate].rate-panel-gone {
    display: none !important;
}

.grid-cell-1-1 {
    grid-column: 1;
    grid-row: 1;
}

.grid-cell-2-1 {
    grid-column: 2;
    grid-row: 1;
}

.grid-cell-3-1 {
    grid-column: 3;
    grid-row: 1;
}

html[data-theme="light"] input,
html[data-theme="light"] textarea {
    background: #f8fafc !important;
    border-color: #cbd5e1 !important;
    color: #0f172a !important;
}

/* ── Theme toggle button ── */
#theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0;
    border-radius: 9999px;
    border: 1px solid var(--border-card);
    background: var(--bg-nav);
    overflow: hidden;
    transition: border-color 0.35s, background 0.35s;
}

#theme-toggle button {
    padding: 6px 11px;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-soft);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    white-space: nowrap;
}

#theme-toggle button.active {
    background: linear-gradient(135deg, #6366f1, #38bdf8);
    color: #fff;
    border-radius: 9999px;
}

#theme-toggle button:hover:not(.active) {
    color: var(--text-base);
}

/* Hero badge light-mode fix */
html[data-theme="light"] .hero-badge {
    background: rgba(99, 102, 241, 0.10) !important;
    color: #0369a1 !important;
}

/* ── Visual Concepts section light-mode overrides ── */
html[data-theme="light"] #visual-concepts {
    background: rgba(248, 250, 252, 0.95) !important;
}

html[data-theme="light"] #visual-concepts [data-interactive-panel] {
    background: rgba(255, 255, 255, 0.95) !important;
    border-color: rgba(203, 213, 225, 1) !important;
    box-shadow: 0 8px 24px rgba(100, 116, 139, 0.12) !important;
}

html[data-theme="light"] #visual-concepts img {
    border-color: rgba(203, 213, 225, 1) !important;
    box-shadow: 0 8px 24px rgba(100, 116, 139, 0.12) !important;
}

/* Concept badges - purple/indigo */
html[data-theme="light"] #visual-concepts .from-indigo-500\/20 {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.15)) !important;
    border-color: rgba(99, 102, 241, 0.35) !important;
}

html[data-theme="light"] #visual-concepts .text-purple-300 {
    color: #7c3aed !important;
}

/* Concept badges - sky/cyan */
html[data-theme="light"] #visual-concepts .from-sky-500\/20 {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.15), rgba(6, 182, 212, 0.15)) !important;
    border-color: rgba(14, 165, 233, 0.35) !important;
}

html[data-theme="light"] #visual-concepts .text-sky-300 {
    color: #0369a1 !important;
}

/* Concept badges - orange/teal */
html[data-theme="light"] #visual-concepts .from-orange-500\/20 {
    background: linear-gradient(135deg, rgba(249, 115, 22, 0.15), rgba(20, 184, 166, 0.15)) !important;
    border-color: rgba(249, 115, 22, 0.35) !important;
}

html[data-theme="light"] #visual-concepts .text-orange-300 {
    color: #ea580c !important;
}

/* Tag badges */
html[data-theme="light"] #visual-concepts .bg-slate-800.text-slate-300 {
    background: rgba(226, 232, 240, 1) !important;
    border-color: rgba(203, 213, 225, 1) !important;
    color: #475569 !important;
}

/* Design philosophy text */
html[data-theme="light"] #visual-concepts strong.text-sky-300 {
    color: #0369a1 !important;
}

/* ── Animated border-draw on hover ──
   Two pseudo-elements trace the rectangle starting at the top-left
   corner and meet at the bottom-right corner, forming the border.
   ::before draws TOP, then RIGHT (TL → TR → BR).
   ::after  draws LEFT, then BOTTOM (TL → BL → BR). */
[data-interactive-panel]::before,
[data-interactive-panel]::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 0;
    box-sizing: border-box;
    border: 2px solid transparent;
    border-radius: inherit;
    pointer-events: none;
    z-index: 2;
}

/* Reverse animation when un-hovering */
[data-interactive-panel]::before {
    transition:
        height 0.15s ease-in,
        width 0.15s ease-in 0.15s,
        border-top-color 0s 0.3s,
        border-right-color 0s 0.3s;
}

[data-interactive-panel]::after {
    transition:
        width 0.15s ease-in,
        height 0.15s ease-in 0.15s,
        border-left-color 0s 0.3s,
        border-bottom-color 0s 0.3s;
}

[data-interactive-panel]:hover::before {
    width: 100%;
    height: 100%;
    border-top-color: var(--draw-color, rgba(14, 165, 233, 0.5));
    border-right-color: var(--draw-color, rgba(14, 165, 233, 0.5));
    transition:
        width 0.15s ease-out,
        height 0.15s ease-out 0.15s,
        border-top-color 0s 0s,
        border-right-color 0s 0.15s;
}

[data-interactive-panel]:hover::after {
    width: 100%;
    height: 100%;
    border-left-color: var(--draw-color, rgba(14, 165, 233, 0.5));
    border-bottom-color: var(--draw-color, rgba(14, 165, 233, 0.5));
    transition:
        height 0.15s ease-out,
        width 0.15s ease-out 0.15s,
        border-left-color 0s 0s,
        border-bottom-color 0s 0.15s;
}

/* ── Staggered reveal-on-scroll ── */
.stagger>.stagger-item {
    opacity: 0;
    transform: translateY(24px);
    transition:
        opacity 0.7s cubic-bezier(.22, 1, .36, 1),
        transform 0.7s cubic-bezier(.22, 1, .36, 1);
    transition-delay: calc(var(--stagger-index, 0) * 110ms);
    will-change: opacity, transform;
}

.stagger.in-view>.stagger-item {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .stagger>.stagger-item {
        opacity: 1;
        transform: none;
        transition: none;
    }

    [data-interactive-panel] {
        animation: none;
        transition: none;
    }

    [data-interactive-panel]:hover,
    .stagger.in-view>[data-interactive-panel].stagger-item:hover {
        transform: none;
    }

    [data-interactive-panel]::before,
    [data-interactive-panel]::after {
        display: none;
    }
}

/* ── Contact form feedback ── */
.form-feedback {
    border-radius: 1rem;
    padding: 1rem 1.25rem;
    font-size: 0.875rem;
    line-height: 1.6;
    text-align: center;
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.form-feedback--visible {
    opacity: 1;
}

.form-feedback--success {
    background: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.4);
    color: #6ee7b7;
}

.form-feedback--error {
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #fca5a5;
}