/* ============================================
   CoLab — Onboarding Flow
   Three steps:
   1) Character + Backdrop (game-style picker)
   2) Personality / Strengths / Team Role
   3) Bio + Portfolio
   Aligned with Lecture / Tutorial language.
============================================ */

/* ============================================
   PAGE SHELL
============================================ */
.auth-main {
    margin-top: 130px;
    padding: 0 64px 72px;
    max-width: 1180px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   HEADER + STEPS
============================================ */
.auth-header {
    margin-bottom: 18px;
    text-align: center;
    opacity: 0;
    transform: translateY(14px);
    animation: authFadeUp 0.55s cubic-bezier(0.4, 0, 0.2, 1) 0.05s forwards;
}

.auth-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.6px;
    text-transform: uppercase;
    color: var(--primary-orange);
    background: rgba(242, 107, 56, 0.10);
    padding: 5px 12px;
    border-radius: 50px;
    margin-bottom: 10px;
}

.auth-eyebrow::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--primary-orange);
    box-shadow: 0 0 8px var(--orange-glow);
}

.auth-title {
    font-family: 'Merriweather', serif;
    font-size: clamp(22px, 2.6vw, 28px);
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.3px;
}

.auth-title .accent {
    background: linear-gradient(135deg, var(--primary-orange), var(--orange-light));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.auth-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 22px;
    flex-wrap: wrap;
    opacity: 0;
    transform: translateY(10px);
    animation: authFadeUp 0.55s cubic-bezier(0.4, 0, 0.2, 1) 0.12s forwards;
}

.auth-step {
    display: flex;
    align-items: center;
    gap: 7px;
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.auth-step .step-num {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--ultra-light);
    border: 1px solid var(--border-color);
    font-size: 11px;
    font-weight: 800;
    color: var(--text-muted);
    transition: var(--transition-bounce);
}

.auth-step.is-done .step-num,
.auth-step.is-active .step-num {
    background: linear-gradient(135deg, var(--primary-orange), var(--orange-light));
    color: var(--pure-white);
    border-color: transparent;
    box-shadow: 0 3px 10px var(--orange-glow);
}

.auth-step.is-active {
    color: var(--text-primary);
}

.auth-step.is-done .step-num::before {
    content: '✓';
    font-size: 11px;
}

.auth-step.is-done .step-num span {
    display: none;
}

.auth-step-divider {
    width: 24px;
    height: 2px;
    background: var(--border-color);
    border-radius: 2px;
    transition: var(--transition-smooth);
}

.auth-step-divider.is-active {
    background: linear-gradient(90deg, var(--primary-orange), var(--orange-light));
}

/* ============================================
   CHARACTER CREATOR (Avatar1)
============================================ */
.creator {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    position: relative;
    opacity: 0;
    transform: translateY(16px);
    animation: authFadeUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) 0.15s forwards;
}

.creator::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-orange), var(--orange-light));
    z-index: 2;
}

.creator-stage {
    padding: 28px 24px 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    background:
        radial-gradient(circle at 50% 30%, rgba(242, 107, 56, 0.05), transparent 60%),
        var(--card-bg);
}

.preview-stage {
    width: 100%;
    max-width: 280px;
    aspect-ratio: 1 / 1;
    border-radius: 22px;
    overflow: hidden;
    position: relative;
    background: #b8d8ff;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.12), inset 0 0 0 1px rgba(255, 255, 255, 0.25);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.preview-stage:hover {
    transform: translateY(-2px);
}

.preview-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: opacity 0.3s ease;
}

.preview-avatar {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center 70%;
    z-index: 2;
}

.char-arrow {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    background: var(--card-bg);
    color: var(--text-secondary);
    font-size: 20px;
    font-weight: 800;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-bounce);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.char-arrow:hover {
    background: linear-gradient(135deg, var(--primary-orange), var(--orange-light));
    color: var(--pure-white);
    border-color: transparent;
    transform: scale(1.06);
    box-shadow: 0 6px 16px var(--orange-glow);
}

.char-arrow:active {
    transform: scale(1);
}

.char-index {
    position: absolute;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(10, 10, 10, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: var(--pure-white);
    padding: 3px 11px;
    border-radius: 50px;
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    z-index: 3;
    pointer-events: none;
}

/* Backdrop section (replaces tabs since accessories are gone) */
.backdrop-panel {
    border-top: 1px solid var(--border-color);
    background: var(--page-bg);
    padding: 16px 18px 20px;
}

.backdrop-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.4px;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: block;
}

.choice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(64px, 1fr));
    gap: 8px;
}

.choice {
    aspect-ratio: 1 / 1;
    border-radius: 10px;
    overflow: hidden;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition-bounce);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.choice img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.choice:hover {
    transform: translateY(-2px);
    border-color: rgba(242, 107, 56, 0.4);
    box-shadow: 0 4px 12px rgba(242, 107, 56, 0.15);
}

.choice.active {
    border-color: var(--primary-orange);
    box-shadow: 0 0 0 3px rgba(242, 107, 56, 0.18), 0 4px 12px rgba(242, 107, 56, 0.20);
}

.choice.active::after {
    content: '✓';
    position: absolute;
    top: 3px;
    right: 3px;
    width: 16px;
    height: 16px;
    background: linear-gradient(135deg, var(--primary-orange), var(--orange-light));
    color: var(--pure-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 800;
    box-shadow: 0 2px 6px var(--orange-glow);
    z-index: 2;
}

/* ============================================
   ACTIONS — unified button size across all steps
============================================ */
.auth-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 22px;
}

.auth-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 9px 20px;
    min-width: 120px;
    border-radius: 9px;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.3px;
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.auth-btn-primary {
    background: linear-gradient(135deg, var(--primary-orange), var(--orange-light));
    color: var(--pure-white);
    box-shadow: 0 3px 12px var(--orange-glow);
}

.auth-btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.auth-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(242, 107, 56, 0.42);
}

.auth-btn-primary:hover::before {
    left: 100%;
}

.auth-btn-ghost {
    background: var(--card-bg);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.auth-btn-ghost:hover {
    border-color: var(--primary-orange);
    color: var(--primary-orange);
}

/* ============================================
   AVATAR 2 — TRAITS
============================================ */
.auth-grid-2 {
    display: grid;
    grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
}

.auth-card-mini {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    padding: 22px 22px 20px;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    text-align: center;
    opacity: 0;
    transform: translateY(16px);
    animation: authFadeUp 0.55s cubic-bezier(0.4, 0, 0.2, 1) 0.18s forwards;
}

.auth-card-mini::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-orange), var(--orange-light));
}

.preview-mini {
    width: 100%;
    max-width: 200px;
    aspect-ratio: 1 / 1;
    margin: 0 auto;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    background: #b8d8ff;
    box-shadow: var(--shadow-sm);
}

.preview-mini .preview-avatar,
.preview-mini .preview-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.preview-mini .preview-avatar {
    object-fit: contain;
    object-position: center 70%;
    z-index: 2;
}

.preview-mini .preview-bg {
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.info-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 18px 20px 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    margin-bottom: 12px;
    opacity: 0;
    transform: translateX(24px);
    animation: authSlideIn 0.55s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.info-card:hover {
    box-shadow: var(--shadow-md);
}

.info-card:nth-of-type(1) { animation-delay: 0.22s; }
.info-card:nth-of-type(2) { animation-delay: 0.30s; }
.info-card:nth-of-type(3) { animation-delay: 0.38s; }

.card-title {
    font-family: 'Merriweather', serif;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 9px;
}

.card-title::before {
    content: '';
    width: 3px;
    height: 16px;
    background: linear-gradient(180deg, var(--primary-orange), var(--orange-light));
    border-radius: 2px;
    box-shadow: 0 0 6px var(--orange-glow);
}

.trait-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.trait-item {
    padding: 5px 12px;
    background: var(--ultra-light);
    border: 1.5px solid var(--border-color);
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    user-select: none;
    transition: var(--transition-bounce);
}

.trait-item:hover {
    border-color: var(--primary-orange);
    color: var(--primary-orange);
    transform: translateY(-1px);
}

.trait-item.active {
    background: linear-gradient(135deg, var(--primary-orange), var(--orange-light));
    border-color: transparent;
    color: var(--pure-white);
    box-shadow: 0 3px 10px var(--orange-glow);
}

/* ============================================
   AVATAR 3 — BIO + PORTFOLIO
============================================ */
.auth-grid-3 {
    display: grid;
    grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
}

.bio-block {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 18px;
}

.bio-label {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.4px;
    color: var(--text-muted);
}

.bio-textarea {
    width: 100%;
    min-height: 120px;
    padding: 12px 14px;
    border: 1.5px solid var(--border-color);
    border-radius: 10px;
    background: var(--page-bg);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    line-height: 1.6;
    resize: vertical;
    transition: var(--transition-smooth);
}

.bio-textarea::placeholder {
    color: var(--text-muted);
}

.bio-textarea:hover {
    background: var(--card-bg);
    border-color: var(--text-muted);
}

.bio-textarea:focus {
    outline: none;
    border-color: var(--primary-orange);
    background: var(--card-bg);
    box-shadow: 0 0 0 3px rgba(242, 107, 56, 0.14);
}

/* Portfolio thumb grid */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

.pf-slot {
    aspect-ratio: 1 / 1;
    border-radius: 10px;
    overflow: hidden;
    background: var(--page-bg);
    border: 1.5px dashed var(--border-color);
    position: relative;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pf-slot:hover {
    border-color: var(--primary-orange);
    background: rgba(242, 107, 56, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(242, 107, 56, 0.12);
}

.pf-slot.has-image {
    border-style: solid;
    border-color: var(--border-color);
}

.pf-slot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.pf-add {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-muted);
    pointer-events: none;
}

.pf-add-icon {
    font-size: 18px;
    color: var(--primary-orange);
    font-weight: 800;
    line-height: 1;
}

.pf-add-text {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pf-remove {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 18px;
    height: 18px;
    background: rgba(10, 10, 10, 0.65);
    color: var(--pure-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 11px;
    font-weight: 700;
    display: none;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    z-index: 2;
}

.pf-slot.has-image .pf-remove {
    display: flex;
}

.pf-remove:hover {
    background: var(--primary-orange);
    transform: scale(1.1);
}

/* ============================================
   ANIMATIONS
============================================ */
@keyframes authFadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes authSlideIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================
   DARK THEME
============================================ */
[data-theme="dark"] .auth-eyebrow {
    background: rgba(242, 107, 56, 0.18);
}

[data-theme="dark"] .bio-textarea,
[data-theme="dark"] .pf-slot {
    background: var(--page-bg);
}

[data-theme="dark"] .char-arrow,
[data-theme="dark"] .choice {
    background: var(--card-bg);
}

/* ============================================
   RESPONSIVE
============================================ */
@media (max-width: 960px) {
    .auth-main {
        padding: 0 36px 60px;
        margin-top: 110px;
    }
    .auth-grid-2,
    .auth-grid-3 {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .auth-card-mini {
        max-width: 360px;
        margin-left: auto;
        margin-right: auto;
    }
    .auth-grid-3 .preview-mini {
        max-width: 200px;
        margin-left: auto;
        margin-right: auto;
    }
}

@media (max-width: 767px) {
    .auth-main {
        padding: 0 18px 56px;
        margin-top: 80px;
    }
    .creator-stage {
        padding: 22px 12px 18px;
        gap: 8px;
    }
    .preview-stage {
        max-width: 240px;
    }
    .char-arrow {
        width: 34px;
        height: 34px;
        font-size: 17px;
    }
    .auth-step-divider {
        width: 14px;
    }
    .auth-step span.step-label {
        display: none;
    }
    .portfolio-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 480px) {
    .preview-stage {
        max-width: 210px;
    }
    .choice-grid {
        grid-template-columns: repeat(auto-fill, minmax(56px, 1fr));
        gap: 6px;
    }
    .auth-btn {
        flex: 1;
        min-width: 0;
        padding: 9px 14px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .creator,
    .auth-header,
    .auth-steps,
    .auth-card-mini,
    .info-card {
        animation: none !important;
        opacity: 1 !important;
        transform: none !important;
    }
}