/* ============================================
   Galaxy Vault – Google-Style Space UI
   ============================================ */

/* ---- Reset ---- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-deep: #020306;
    --text-primary: #f8f9fa;
    --text-secondary: #9aa0a6;
    --text-dim: #5f6368;

    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-bg-hover: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-focus: rgba(255, 255, 255, 0.2);

    --accent-blue: #8ab4f8;
    --accent-purple: #c58af9;
    --accent-green: #81c995;
    --accent-pink: #f48fb1;
    --accent-gold: #fde293;

    --font-display: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg-deep);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit;
    -webkit-tap-highlight-color: transparent;
}

/* ---- Canvases & Background ---- */
canvas {
    position: fixed;
    inset: 0;
    pointer-events: none;
}

#starfield {
    z-index: 0;
}

#cosmic-dust {
    z-index: 1;
    mix-blend-mode: screen;
    opacity: 0.3;
}

.ambient-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(200px);
    opacity: 0.08;
    pointer-events: none;
    mix-blend-mode: screen;
    z-index: 1;
}

.glow-blue {
    width: 1000px;
    height: 1000px;
    background: #2b70c9;
    top: -200px;
    right: -200px;
    animation: breathe 25s infinite alternate;
}

.glow-purple {
    width: 1200px;
    height: 1200px;
    background: #3d1b66;
    bottom: -300px;
    left: -200px;
    animation: breathe 30s infinite alternate-reverse;
}

@keyframes breathe {
    from {
        transform: scale(0.95);
        opacity: 0.05;
    }

    to {
        transform: scale(1.05);
        opacity: 0.12;
    }
}


/* ---- Page Wrapper ---- */
.page-wrapper {
    position: relative;
    z-index: 10;
}

/* ================================================
   Navbar  (Floating Pill)
   ================================================ */
.navbar {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    background: rgba(20, 22, 28, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    z-index: 100;
    width: 90%;
    max-width: 900px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    transition: background .3s;
}

.navbar__brand {
    display: flex;
    align-items: center;
    gap: .5rem;
}

.navbar__logo {
    font-size: 1.2rem;
}

.navbar__name {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    color: var(--text-primary);
}

.navbar__links {
    display: flex;
    list-style: none;
    gap: .5rem;
}

.navbar__link {
    font-size: .85rem;
    font-weight: 400;
    padding: .4rem 1rem;
    border-radius: 100px;
    color: var(--text-secondary);
    transition: color .25s, background .25s;
}

.navbar__link:hover {
    color: var(--text-primary);
    background: var(--glass-bg-hover);
}

.navbar__link--active {
    color: var(--bg-deep);
    background: var(--text-primary);
    font-weight: 500;
}

.navbar__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.navbar__hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform .3s, opacity .3s;
}

.navbar__hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.navbar__hamburger.active span:nth-child(2) {
    opacity: 0;
}

.navbar__hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ================================================
   Vault Header
   ================================================ */
.vault-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 140px 1.5rem 2rem;
    position: relative;
}

.vault-header__icon {
    width: 56px;
    height: 56px;
    margin-bottom: 1rem;
    color: var(--accent-blue);
}

.vault-header__icon svg {
    width: 100%;
    height: 100%;
    stroke-width: 1.5;
}

.vault-header__title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 500;
    letter-spacing: -0.5px;
    margin-bottom: .6rem;
    color: var(--text-primary);
}

.vault-header__subtitle {
    max-width: 500px;
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 300;
}

/* ================================================
   Upload Section (Clean Glassmorphism)
   ================================================ */
.upload-section {
    display: flex;
    justify-content: center;
    padding: 2rem clamp(1rem, 4vw, 3rem) 1rem;
}

.upload-zone {
    position: relative;
    width: 100%;
    max-width: 600px;
    border: 1px dashed var(--glass-border-focus);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.015);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 3.5rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all .35s ease;
    overflow: hidden;
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--accent-blue);
    background: rgba(255, 255, 255, 0.03);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    transform: translateY(-2px);
}

.upload-zone__content {
    position: relative;
    z-index: 1;
}

.upload-zone__icon {
    width: 48px;
    height: 48px;
    color: var(--accent-blue);
    margin-bottom: 1.2rem;
    opacity: 0.8;
}

.upload-zone__title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: .4rem;
    color: var(--text-primary);
}

.upload-zone__desc {
    color: var(--text-secondary);
    font-size: .9rem;
    margin-bottom: 1rem;
}

.upload-zone__formats {
    display: inline-block;
    font-size: .75rem;
    color: var(--text-dim);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: .3rem .8rem;
    border-radius: 100px;
}

.upload-zone__input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

/* Upload success flash */
.upload-zone.upload-success {
    border-color: var(--accent-green);
    background: rgba(129, 201, 149, 0.05);
}

/* ================================================
   Stats Bar
   ================================================ */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    padding: 1.5rem 1rem 3rem;
}

.stat-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem 2rem;
    border-radius: 20px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    min-width: 140px;
}

.stat-chip__value {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--text-primary);
}

.stat-chip__label {
    font-size: .8rem;
    color: var(--text-secondary);
    margin-top: .2rem;
}

/* ================================================
   Filter Buttons & Grid Header
   ================================================ */
.vault-grid-section {
    padding: 1rem clamp(1rem, 4vw, 3rem) 4rem;
    max-width: 1200px;
    margin: 0 auto;
}

.vault-grid-section__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.vault-grid-section__title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--text-primary);
}

.vault-grid-section__filters {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
}

.filter-btn {
    font-family: var(--font-body);
    font-size: .85rem;
    font-weight: 400;
    padding: .4rem 1.2rem;
    border-radius: 100px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all .25s;
}

.filter-btn:hover {
    color: var(--text-primary);
    background: var(--glass-bg-hover);
}

.filter-btn--active {
    color: var(--bg-deep);
    background: var(--text-primary);
    border-color: var(--text-primary);
}

/* ================================================
   Certificate Grid & Cards
   ================================================ */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* -- Certificate Card -- */
.cert-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: transform .4s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow .4s, border-color .4s;
    cursor: pointer;
    opacity: 0;
    transform: translateY(20px);
}

.cert-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.cert-card:hover {
    transform: translateY(-4px);
    border-color: var(--glass-border-focus);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
    background: rgba(255, 255, 255, 0.035);
}

/* Preview area */
.cert-card__preview {
    height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.2);
    border-bottom: 1px solid var(--glass-border);
    overflow: hidden;
    position: relative;
}

.cert-card__preview-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
    transition: opacity 0.4s;
}

.cert-card:hover .cert-card__preview-img {
    opacity: 1;
}

.cert-card__preview-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .5rem;
    color: var(--text-dim);
}

.cert-card__preview-placeholder svg {
    width: 32px;
    height: 32px;
    opacity: 0.6;
}

/* Badge overlay */
.cert-card__badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: .3rem .8rem;
    border-radius: 100px;
    font-size: .65rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: .5px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* Card body */
.cert-card__body {
    padding: 1.25rem;
}

.cert-card__title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 400;
    margin-bottom: .25rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cert-card__issuer {
    font-size: .8rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.cert-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.cert-card__date {
    font-size: .75rem;
    color: var(--text-dim);
}

.cert-card__category {
    font-size: .7rem;
    font-weight: 500;
    padding: .2rem .6rem;
    border-radius: 100px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
}

/* Category Accent Rings */
.cert-card[data-glow="blue"] .cert-card__badge {
    color: var(--accent-blue);
}

.cert-card[data-glow="purple"] .cert-card__badge {
    color: var(--accent-purple);
}

.cert-card[data-glow="green"] .cert-card__badge {
    color: var(--accent-green);
}

.cert-card[data-glow="pink"] .cert-card__badge {
    color: var(--accent-pink);
}

.cert-card[data-glow="gold"] .cert-card__badge {
    color: var(--accent-gold);
}

/* Delete button */
.cert-card__delete {
    position: absolute;
    top: 12px;
    left: 12px;
    width: 32px;
    height: 32px;
    border-radius: 100px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all .3s;
    backdrop-filter: blur(8px);
}

.cert-card:hover .cert-card__delete {
    opacity: 1;
}

.cert-card__delete:hover {
    color: #f28b82;
    background: rgba(242, 139, 130, 0.1);
    border-color: rgba(242, 139, 130, 0.3);
}

/* ================================================
   Empty State
   ================================================ */
.empty-state {
    text-align: center;
    padding: 6rem 1rem;
    color: var(--text-dim);
}

.empty-state__icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    opacity: .5;
}

.empty-state__text {
    font-size: .95rem;
}

/* ================================================
   Modal
   ================================================ */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity .35s;
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: all;
}

.modal {
    background: rgba(20, 22, 28, 0.85);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    width: 90%;
    max-width: 500px;
    overflow: hidden;
    transform: translateY(20px) scale(.98);
    transition: transform .4s cubic-bezier(0.2, 0.8, 0.2, 1);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6);
}

.modal-overlay.open .modal {
    transform: translateY(0) scale(1);
}

.modal__close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    font-size: 1.2rem;
    width: 36px;
    height: 36px;
    border-radius: 100px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .25s;
    z-index: 2;
}

.modal__close:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.modal__preview {
    width: 100%;
    height: 220px;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.modal__preview-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal__info {
    padding: 2rem;
}

.modal__title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: .25rem;
}

.modal__issuer {
    color: var(--text-secondary);
    font-size: .95rem;
    margin-bottom: 1.5rem;
}

.modal__details {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.modal__detail-item {
    display: flex;
    flex-direction: column;
}

.modal__detail-label {
    font-size: .75rem;
    color: var(--text-dim);
    margin-bottom: .25rem;
    text-transform: uppercase;
    letter-spacing: .5px;
}

.modal__detail-value {
    font-size: .95rem;
    font-weight: 500;
}

.modal__detail-value a {
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    gap: .25rem;
}

/* Base button */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: .75rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-family: var(--font-body);
    font-size: .9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .25s;
    text-decoration: none;
}

.btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.modal__actions {
    display: flex;
    gap: 1rem;
}

.btn-primary {
    flex: 1;
    background: var(--text-primary);
    color: var(--bg-deep);
    border: none;
}

.btn-primary:hover {
    background: #fff;
    transform: translateY(-1px);
}

.btn-secondary {
    flex: 1;
}

/* ================================================
   Footer
   ================================================ */
.footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-dim);
    font-size: .85rem;
    border-top: 1px solid var(--glass-border);
    margin-top: 2rem;
}

/* ================================================
   Responsive
   ================================================ */
@media (max-width: 768px) {
    .navbar__links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: rgba(20, 22, 28, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 1.5rem;
        border-radius: 20px;
        border: 1px solid var(--glass-border);
        box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    }

    .navbar__links.active {
        display: flex;
    }

    .navbar__hamburger {
        display: flex;
    }

    .vault-header {
        padding-top: 110px;
    }

    .modal__actions {
        flex-direction: column;
    }
}