/* ============================================================
   Onboarding Wizard - CSS Foundation
   A 6-slide first-run overlay for Noteroom.
   Uses design tokens from variables.css exclusively.
   ============================================================ */

/* ----------------------------------------------------------
   Overlay & Card
   ---------------------------------------------------------- */

.onboarding-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-onboarding);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(4, 8, 18, 0.55);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    animation: onboarding-overlay-in 0.4s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.onboarding-overlay.auth-active {
    z-index: 29000;
}

.onboarding-card {
    position: relative;
    width: 600px;
    max-width: calc(100vw - 32px);
    max-height: min(740px, calc(100vh - 32px));
    border-radius: 20px;
    background: var(--header-bg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: onboarding-card-in 0.5s cubic-bezier(0.16, 1, 0.3, 1) 0.05s both;
}

/* ----------------------------------------------------------
   Dismiss Animations
   ---------------------------------------------------------- */

.onboarding-overlay.dismissing {
    animation: onboarding-dismiss 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.onboarding-overlay.dismissing .onboarding-card {
    animation: onboarding-card-dismiss 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* ----------------------------------------------------------
   Skip Button
   ---------------------------------------------------------- */

.onboarding-skip {
    position: absolute;
    top: 16px;
    right: 20px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    z-index: 1;
    transition: color 0.15s ease, background 0.15s ease;
}

.onboarding-skip:hover {
    color: var(--text-primary);
    background: var(--hover-bg);
}

/* ----------------------------------------------------------
   Slides Viewport & Track
   ---------------------------------------------------------- */

.onboarding-slides-viewport {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.onboarding-slides-track {
    display: flex;
    flex: 1;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

.onboarding-slide {
    flex: 0 0 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 36px;
    overflow-y: auto;
}

.onboarding-slide-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
    width: 100%;
    max-width: 440px;
}

/* ----------------------------------------------------------
   Slide 1 - Welcome
   ---------------------------------------------------------- */

.onboarding-logo {
    max-width: 80px;
    height: auto;
    margin-bottom: 8px;
}

.onboarding-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.onboarding-tagline {
    font-size: 1.15rem;
    color: var(--text-secondary);
    letter-spacing: 0.02em;
    margin-top: -4px;
}

.onboarding-cta {
    padding: 12px 32px;
    font-size: 0.95rem;
}

/* ----------------------------------------------------------
   Slide 2 - Feature Carousel
   ---------------------------------------------------------- */

.onboarding-heading {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.onboarding-subtext {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.onboarding-carousel {
    position: relative;
    width: 100%;
    min-height: 340px;
}

.onboarding-carousel-track {
    position: relative;
    width: 100%;
    min-height: 320px;
}

.onboarding-carousel-item {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.35s ease, transform 0.35s ease;
    pointer-events: none;
    padding: 10px 0;
}

.onboarding-carousel-item.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* ----------------------------------------------------------
   Feature Graphics - Shared
   ---------------------------------------------------------- */

.onboarding-feature-graphic {
    width: 280px;
    height: 180px;
    position: relative;
    margin: 0 auto 20px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

/* ----------------------------------------------------------
   Feature Graphic 1 - Notes (fanning cards)
   ---------------------------------------------------------- */

.onboarding-graphic-notes {
    background: var(--surface-2);
}

.onboarding-note-card {
    position: absolute;
    width: 80px;
    height: 105px;
    border-radius: var(--radius-md);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: notes-fan-out 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.onboarding-note-card:nth-child(1) {
    --fan-rotation: -10deg;
    --fan-offset: -28px;
    background: var(--accent-color);
    animation-delay: 0s;
}

.onboarding-note-card:nth-child(2) {
    --fan-rotation: 0deg;
    --fan-offset: 0px;
    background: var(--accent-subtle);
    animation-delay: 0.1s;
}

.onboarding-note-card:nth-child(3) {
    --fan-rotation: 10deg;
    --fan-offset: 28px;
    background: var(--surface-3);
    animation-delay: 0.2s;
}

.onboarding-note-line {
    position: absolute;
    left: 8px;
    right: 8px;
    height: 3px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.25);
    top: 16px;
}

.onboarding-note-card:nth-child(2) .onboarding-note-line,
.onboarding-note-card:nth-child(3) .onboarding-note-line {
    background: rgba(0, 0, 0, 0.1);
}

@keyframes notes-fan-out {
    0% {
        transform: translate(-50%, -50%) rotate(0deg) translateX(0);
    }
    100% {
        transform: translate(-50%, -50%) rotate(var(--fan-rotation)) translateX(var(--fan-offset));
    }
}

/* ----------------------------------------------------------
   Feature Graphic 2 - Canvas (dot grid + drawn path)
   ---------------------------------------------------------- */

.onboarding-graphic-canvas {
    background:
        radial-gradient(circle, var(--border-color) 0.7px, transparent 0.7px);
    background-size: 14px 14px;
}

.onboarding-canvas-notecard {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 190px;
    padding: 18px 16px;
    background: var(--header-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    gap: 8px;
    animation: notecard-fade-in 0.4s ease-out 0.1s both;
}

.onboarding-canvas-noteline {
    height: 5px;
    border-radius: 2px;
    background: var(--surface-3);
    width: 90%;
}

.onboarding-canvas-noteline.short { width: 55%; }
.onboarding-canvas-noteline.med { width: 72%; }

.onboarding-canvas-annotation {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.onboarding-annotate-stroke {
    fill: none;
    stroke: var(--accent-color);
    stroke-linecap: round;
    stroke-linejoin: round;
}

.onboarding-annotate-arrow {
    stroke-dasharray: 160;
    stroke-dashoffset: 160;
}

.onboarding-annotate-underline {
    stroke-dasharray: 100;
    stroke-dashoffset: 100;
}

.onboarding-annotate-text {
    opacity: 0;
    font-family: 'Segoe Script', 'Comic Sans MS', 'Bradley Hand', cursive;
    font-weight: 400;
}

.onboarding-annotate-head {
    opacity: 0;
}

/* Sequence: text fades in → underline draws → arrow draws → arrowhead pops */
.onboarding-carousel-item.active .onboarding-annotate-text {
    animation: annotate-text-in 0.4s ease-out 0.4s forwards;
}

.onboarding-carousel-item.active .onboarding-annotate-underline {
    animation: draw-annotate-line 0.5s ease-out 0.7s forwards;
}

.onboarding-carousel-item.active .onboarding-annotate-arrow {
    animation: draw-annotate-line 0.6s cubic-bezier(0.25, 0, 0.2, 1) 1.0s forwards;
}

.onboarding-carousel-item.active .onboarding-annotate-head {
    animation: annotate-head-pop 0.25s cubic-bezier(0.34, 1.56, 0.64, 1) 1.55s forwards;
}


@keyframes notecard-fade-in {
    from {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
}

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

@keyframes annotate-text-in {
    0% {
        opacity: 0;
        transform: translateY(4px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes annotate-head-pop {
    0% {
        opacity: 0;
        transform: scale(0);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}


/* ----------------------------------------------------------
   Feature Graphic 3 - Collaboration (moving cursors)
   ---------------------------------------------------------- */

.onboarding-graphic-collab {
    background: var(--surface-2);
}

.onboarding-cursor {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.onboarding-cursor-pointer {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.onboarding-cursor-avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: -2px;
    margin-left: 12px;
    line-height: 1;
}

.onboarding-cursor-a {
    animation: cursor-a-move 3s ease-in-out infinite;
}

.onboarding-cursor-b {
    animation: cursor-b-move 3s ease-in-out infinite;
}

@keyframes cursor-a-move {
    0%   { transform: translate(30px, 25px); }
    25%  { transform: translate(160px, 45px); }
    50%  { transform: translate(120px, 110px); }
    75%  { transform: translate(50px, 70px); }
    100% { transform: translate(30px, 25px); }
}

@keyframes cursor-b-move {
    0%   { transform: translate(200px, 90px); }
    25%  { transform: translate(80px, 30px); }
    50%  { transform: translate(180px, 20px); }
    75%  { transform: translate(210px, 80px); }
    100% { transform: translate(200px, 90px); }
}

/* ----------------------------------------------------------
   Feature Graphic 4 - Moodboard (scattered image cards)
   ---------------------------------------------------------- */

.onboarding-graphic-moodboard {
    background: var(--surface-1);
    overflow: hidden;
}

.onboarding-mb-card {
    position: absolute;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    animation: mb-pop-in 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.onboarding-mb-card.mb-1 {
    left: 12%;
    top: 12%;
    width: 80px;
    height: 58px;
    background: var(--accent-color);
    transform: rotate(-5deg);
    animation-delay: 0.1s;
}

.onboarding-mb-card.mb-2 {
    left: 56%;
    top: 6%;
    width: 65px;
    height: 82px;
    background: var(--surface-3);
    transform: rotate(4deg);
    animation-delay: 0.2s;
}

.onboarding-mb-card.mb-3 {
    left: 28%;
    top: 48%;
    width: 88px;
    height: 56px;
    background: var(--accent-subtle);
    transform: rotate(-2deg);
    animation-delay: 0.3s;
}

.onboarding-mb-card.mb-4 {
    left: 64%;
    top: 44%;
    width: 60px;
    height: 72px;
    background: var(--surface-2);
    border: 2px solid var(--accent-color);
    transform: rotate(6deg);
    animation-delay: 0.4s;
}

.onboarding-mb-card.mb-5 {
    left: 6%;
    top: 56%;
    width: 50px;
    height: 40px;
    background: var(--surface-3);
    transform: rotate(-8deg);
    animation-delay: 0.5s;
}

@keyframes mb-pop-in {
    from {
        opacity: 0;
        scale: 0.4;
    }
    to {
        opacity: 1;
        scale: 1;
    }
}

/* ----------------------------------------------------------
   Slide 3 - Local-First + Cloud (Two-Column)
   ---------------------------------------------------------- */

.onboarding-two-col {
    display: flex;
    gap: 24px;
    text-align: center;
}

.onboarding-col {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.onboarding-col-divider {
    width: 1px;
    background: var(--border-color);
    align-self: stretch;
}

.onboarding-col-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
}

.onboarding-col h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.onboarding-col p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* ----------------------------------------------------------
   Slide 4 - Theme Picker
   ---------------------------------------------------------- */

.onboarding-theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 10px;
    max-width: 480px;
    width: 100%;
    margin: 0 auto;
}

.onboarding-theme-swatch {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 10px 8px;
    border-radius: var(--radius-lg);
    border: 2px solid transparent;
    background: none;
    cursor: pointer;
    transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.onboarding-theme-swatch:hover {
    background: var(--hover-bg);
}

.onboarding-theme-swatch.selected {
    border-color: var(--accent-color);
    background: var(--surface-1);
}

.onboarding-swatch-preview {
    width: 100%;
    height: 40px;
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: row;
    border: 1px solid var(--border-color);
}

.swatch-color-bar {
    flex: 1;
    height: 100%;
}

.swatch-color-bar:nth-child(1) {
    flex: 3;
}

.swatch-color-bar:nth-child(2) {
    flex: 2;
}

.swatch-color-bar:nth-child(3),
.swatch-color-bar:nth-child(4) {
    flex: 1;
}

.swatch-color-bar:first-child {
    border-radius: var(--radius-md) 0 0 var(--radius-md);
}

.swatch-color-bar:last-child {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.onboarding-swatch-label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--text-secondary);
}

/* ----------------------------------------------------------
   Slide 5 - Sign In
   ---------------------------------------------------------- */

.onboarding-signin {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.onboarding-signin-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--accent-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-color);
    margin: 0 auto 12px;
}

.onboarding-signin .onboarding-subtext strong {
    color: var(--accent-color);
    font-weight: 600;
}

.onboarding-signin-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
    max-width: 260px;
    margin-top: 4px;
}

.onboarding-signin-btn {
    padding: 12px 32px;
    width: 100%;
}

.onboarding-continue-offline {
    background: var(--surface-2);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 32px;
    font-size: 0.9rem;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: background 0.15s ease, border-color 0.15s ease;
    width: 100%;
    font-weight: 500;
}

.onboarding-continue-offline:hover {
    background: var(--surface-3);
    border-color: var(--text-secondary);
}

.onboarding-platform-note {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    opacity: 0.7;
    margin-top: 16px;
}

/* ----------------------------------------------------------
   Slide 6 - Ready
   ---------------------------------------------------------- */

.onboarding-ready-graphic {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--accent-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.onboarding-ready-graphic.animate {
    animation: ready-pop 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.onboarding-ready-graphic svg {
    width: 36px;
    height: 36px;
}

.onboarding-ready-graphic.animate path {
    stroke-dasharray: 36;
    stroke-dashoffset: 36;
    animation: draw-checkmark 0.4s ease-out 0.3s forwards;
}

@keyframes ready-pop {
    0%   { transform: scale(0); }
    70%  { transform: scale(1.15); }
    100% { transform: scale(1); }
}

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

/* ----------------------------------------------------------
   Navigation Bar
   ---------------------------------------------------------- */

.onboarding-nav {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 28px 20px;
    border-top: 1px solid var(--border-color);
}

.onboarding-nav-back {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: var(--text-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: color 0.15s ease, background 0.15s ease;
}

.onboarding-nav-back:hover {
    color: var(--text-primary);
    background: var(--surface-2);
}

.onboarding-nav-next {
    display: flex;
    align-items: center;
    gap: 6px;
}

.onboarding-dots {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
}

.onboarding-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--surface-3);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}

.onboarding-dot.active {
    background: var(--accent-color);
    transform: scale(1.25);
}

/* ----------------------------------------------------------
   Entrance Keyframes
   ---------------------------------------------------------- */

@keyframes onboarding-overlay-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes onboarding-card-in {
    from { opacity: 0; transform: scale(0.94) translateY(18px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* ----------------------------------------------------------
   Dismiss Keyframes
   ---------------------------------------------------------- */

@keyframes onboarding-dismiss {
    to { opacity: 0; }
}

@keyframes onboarding-card-dismiss {
    from { transform: translateY(0) scale(1); opacity: 1; }
    to   { transform: translateY(-60px) scale(0.96); opacity: 0; }
}

/* ----------------------------------------------------------
   Reduced Motion / Animations Disabled
   ---------------------------------------------------------- */

body.animations-disabled .onboarding-overlay,
body.animations-disabled .onboarding-card,
body.animations-disabled .onboarding-slides-track,
body.animations-disabled .onboarding-carousel-item,
body.animations-disabled .onboarding-feature-graphic * {
    animation: none !important;
    transition-duration: 0.01ms !important;
}

@media (prefers-reduced-motion: reduce) {
    .onboarding-slides-track,
    .onboarding-carousel-item {
        transition: none;
    }

    .onboarding-feature-graphic * {
        animation: none !important;
    }
}

/* ── Responsive: ensure onboarding never clips at small viewports ──
   UI zoom (applyUIScale) scales the overlay via CSS zoom. Because zoom
   doesn't affect viewport-relative units inside the zoomed element,
   calc(100vh) inside a zoomed container still evaluates against the real
   viewport. We must therefore cap the card height in viewport units that
   account for the zoom factor. The simplest robust fix: at any viewport
   where the card *could* clip, reduce internal spacing and min-heights
   so the flex layout can shrink to fit. */

@media (max-height: 720px) {
    .onboarding-slide { padding: 24px 28px; }
    .onboarding-carousel { min-height: 240px; }
    .onboarding-carousel-track { min-height: 220px; }
    .onboarding-nav { padding: 12px 20px 14px; }
    .onboarding-logo { max-width: 56px; }
    .onboarding-title { font-size: 1.7rem; }
    .onboarding-tagline { font-size: var(--text-sm); }
}

@media (max-height: 520px) {
    .onboarding-slide { padding: 14px 20px; }
    .onboarding-carousel { min-height: 180px; }
    .onboarding-carousel-track { min-height: 160px; }
    .onboarding-slide-content { gap: 10px; }
    .onboarding-nav { padding: 8px 16px 10px; }
    .onboarding-logo { max-width: 40px; }
    .onboarding-title { font-size: 1.3rem; }
    .onboarding-heading { font-size: 1.05rem; }
}