:root {
    --bg-soft: #f3f8f7;
    --bg-accent: #d9efe8;
    --text-main: #102127;
    --text-muted: #4f6470;
    --card-bg: #ffffff;
    --card-border: #c8d9d3;
    --brand: #0d8f83;
    --brand-deep: #0a6d64;
    --warning: #d14f3e;
    --shadow: 0 18px 48px rgba(16, 33, 39, 0.12);
    --surface: rgba(255, 255, 255, 0.86);
    --pill-bg: #ffffff;
    --pill-border: #bdd7cf;
    --pill-hover: #f6fffc;
    --card-surface-start: #ffffff;
    --card-surface-end: #f4fbf8;
    --panel-shell-start: #f9fcfb;
    --panel-shell-end: #e1f1eb;
    --panel-border: #a9ccbf;
    --panel-text: #23353f;
    --panel-text-soft: #36505c;
    --modal-bg: #ffffff;
    --field-bg: #fbfdfc;
    --welcome-bg: rgba(226, 247, 241, 0.86);
    --welcome-border: rgba(129, 189, 172, 0.45);
    --welcome-text: #0b655d;
    --bg-glow-a: rgba(255, 255, 255, 0.78);
    --bg-glow-b: rgba(162, 219, 204, 0.48);
    --bg-accent-orb-1: rgba(88, 195, 175, 0.22);
    --bg-accent-orb-2: rgba(84, 141, 214, 0.12);
}

html[data-theme="dark"] {
    --bg-soft: #0f171c;
    --bg-accent: #162228;
    --text-main: #e8f0f1;
    --text-muted: #a0b2bb;
    --card-bg: #172229;
    --card-border: #2b3c46;
    --brand: #58c3af;
    --brand-deep: #76d4c2;
    --warning: #ff8f82;
    --shadow: 0 20px 44px rgba(0, 0, 0, 0.42);
    --surface: rgba(20, 31, 38, 0.82);
    --pill-bg: #1a2830;
    --pill-border: #324651;
    --pill-hover: #22333d;
    --card-surface-start: #1a2730;
    --card-surface-end: #142128;
    --panel-shell-start: #25353f;
    --panel-shell-end: #1b2a33;
    --panel-border: #3b5664;
    --panel-text: #d2e0e3;
    --panel-text-soft: #acc1c8;
    --modal-bg: #1a2630;
    --field-bg: #121c23;
    --welcome-bg: rgba(27, 54, 59, 0.8);
    --welcome-border: rgba(78, 134, 138, 0.55);
    --welcome-text: #9ee3d3;
    --bg-glow-a: rgba(116, 158, 172, 0.32);
    --bg-glow-b: rgba(87, 174, 155, 0.3);
    --bg-accent-orb-1: rgba(82, 187, 165, 0.2);
    --bg-accent-orb-2: rgba(98, 127, 209, 0.16);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text-main);
    font-family: "Space Grotesk", "Segoe UI", sans-serif;
    position: relative;
    overflow-x: hidden;
    background:
        radial-gradient(80rem 30rem at -10% -20%, rgba(255, 255, 255, 0.92) 10%, transparent 55%),
        radial-gradient(60rem 30rem at 110% -10%, rgba(200, 235, 226, 0.85) 8%, transparent 60%),
        repeating-linear-gradient(120deg, rgba(255, 255, 255, 0.08) 0 2px, transparent 2px 20px),
        linear-gradient(160deg, var(--bg-soft), var(--bg-accent));
}

html[data-theme="dark"] body {
    background:
        radial-gradient(80rem 30rem at -10% -20%, rgba(103, 145, 158, 0.14) 10%, transparent 55%),
        radial-gradient(60rem 30rem at 110% -10%, rgba(63, 115, 102, 0.2) 8%, transparent 60%),
    repeating-linear-gradient(120deg, rgba(145, 170, 184, 0.06) 0 2px, transparent 2px 20px),
        linear-gradient(160deg, var(--bg-soft), var(--bg-accent));
}

body::before,
body::after {
    content: "";
    position: fixed;
    inset: auto;
    width: 42vw;
    height: 42vw;
    max-width: 560px;
    max-height: 560px;
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    filter: blur(1px);
}

body::before {
    top: -10vw;
    left: -12vw;
    background: radial-gradient(circle at 30% 30%, var(--bg-glow-a), rgba(255, 255, 255, 0));
    animation: floatBlobA 16s ease-in-out infinite alternate;
}

body::after {
    right: -12vw;
    bottom: -10vw;
    background: radial-gradient(circle at 60% 40%, var(--bg-glow-b), rgba(162, 219, 204, 0));
    animation: floatBlobB 20s ease-in-out infinite alternate;
}

@keyframes floatBlobA {
    0% {
        transform: translate(0, 0) scale(1);
    }
    100% {
        transform: translate(2vw, 1.5vw) scale(1.06);
    }
}

@keyframes floatBlobB {
    0% {
        transform: translate(0, 0) scale(1);
    }
    100% {
        transform: translate(-2vw, -1.8vw) scale(1.05);
    }
}

.hidden {
    display: none !important;
}

.page-shell {
    width: min(1200px, 92vw);
    margin: 2rem auto 3rem;
    position: relative;
    z-index: 1;
}

.page-shell::before,
.page-shell::after {
    content: "";
    position: fixed;
    pointer-events: none;
    z-index: -1;
    border-radius: 50%;
    filter: blur(2px);
}

.page-shell::before {
    width: 28rem;
    height: 28rem;
    left: 6vw;
    top: 22vh;
    background: conic-gradient(from 100deg, var(--bg-accent-orb-1), transparent 62%, var(--bg-accent-orb-2));
    animation: orbitA 22s linear infinite;
}

.page-shell::after {
    width: 22rem;
    height: 22rem;
    right: 9vw;
    top: 56vh;
    background: conic-gradient(from 280deg, var(--bg-accent-orb-2), transparent 66%, var(--bg-accent-orb-1));
    animation: orbitB 18s linear infinite;
}

@keyframes orbitA {
    0% {
        transform: rotate(0deg) translateY(0);
    }
    100% {
        transform: rotate(360deg) translateY(-10px);
    }
}

@keyframes orbitB {
    0% {
        transform: rotate(0deg) translateY(0);
    }
    100% {
        transform: rotate(-360deg) translateY(8px);
    }
}

#bar {
    display: grid;
    grid-template-columns: 1fr auto auto;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 1.1rem 1.25rem;
    border: 1px solid var(--card-border);
    border-radius: 1.2rem;
    background: var(--surface);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
}

.brand-block {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.brand-kicker {
    margin: 0;
    font-size: 0.8rem;
    letter-spacing: 0.12rem;
    text-transform: uppercase;
    color: var(--text-muted);
}

.brand-title {
    margin: 0;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(1.4rem, 2.1vw, 2rem);
    line-height: 1;
}

#welcome {
    justify-self: end;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    border: 1px solid var(--welcome-border);
    background: var(--welcome-bg);
    color: var(--welcome-text);
    font-weight: 600;
    white-space: nowrap;
}

.quick-actions {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    flex-wrap: nowrap;
    justify-content: flex-end;
}

#login,
#admin,
#logout {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.25rem;
    padding: 0 1rem;
    border-radius: 999px;
    border: 1px solid var(--pill-border);
    background: var(--pill-bg);
    color: var(--text-main);
    font-size: 0.92rem;
    font-weight: 600;
    transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
    cursor: pointer;
}

#login:hover,
#admin:hover,
#logout:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 20px rgba(13, 143, 131, 0.16);
    background: var(--pill-hover);
}

#login a,
#admin a {
    text-decoration: none;
    color: inherit;
}

#logout {
    border-color: rgba(255, 143, 130, 0.45);
    color: var(--warning);
}

#theme-toggle {
    position: fixed;
    right: clamp(0.8rem, 2vw, 1.25rem);
    bottom: clamp(0.8rem, 2vw, 1.25rem);
    width: 2.85rem;
    height: 2.85rem;
    border-radius: 50%;
    border: 1px solid var(--pill-border);
    background: var(--surface);
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.15rem;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 12px 24px rgba(8, 18, 22, 0.22);
    backdrop-filter: blur(8px);
    transition: transform 170ms ease, box-shadow 170ms ease, background-color 170ms ease;
    z-index: 30;
}

#theme-toggle:hover {
    transform: translateY(-2px) scale(1.03);
    box-shadow: 0 16px 30px rgba(8, 18, 22, 0.3);
    background: var(--pill-hover);
}

#theme-toggle:focus-visible {
    outline: 2px solid rgba(88, 195, 175, 0.5);
    outline-offset: 2px;
}

#all {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 0.8rem;
}

.desc {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    min-height: 196px;
    padding: 0.82rem;
    border-radius: 0.95rem;
    border: 1px solid var(--card-border);
    background: linear-gradient(165deg, var(--card-surface-start) 0%, var(--card-surface-end) 100%);
    box-shadow: 0 12px 22px rgba(16, 33, 39, 0.1);
    text-align: center;
    font-weight: 600;
    color: var(--text-main);
    transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.card-title-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.6rem;
}

.card-title-bar .panel-title {
    flex: 1;
    text-align: left;
    font-size: 0.9rem;
    line-height: 1.25;
    margin: 0;
}

.card-title-bar .flip-toggle {
    align-self: center;
    flex-shrink: 0;
}

.flip-wrap {
    flex: 1;
}

.desc:hover {
    transform: translateY(-3px);
    border-color: rgba(88, 195, 175, 0.42);
    box-shadow: 0 18px 30px rgba(16, 33, 39, 0.14);
}

.desc a {
    text-decoration: none;
    color: inherit;
}

.flip-wrap {
    width: 100%;
    perspective: 1200px;
}

.flip-card {
    position: relative;
    width: 100%;
    min-height: 160px;
    transform-style: preserve-3d;
    transition: transform 620ms cubic-bezier(0.2, 0.7, 0.18, 1);
}

.flip-card.is-flipped {
    transform: rotateY(180deg);
}

.flip-face {
    width: 100%;
    backface-visibility: hidden;
}

.flip-front {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
}

.flip-back {
    position: absolute;
    inset: 0;
    border-radius: 0.82rem;
    border: 1px solid var(--panel-border);
    background: linear-gradient(155deg, var(--panel-shell-start), var(--panel-shell-end));
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 0.55rem;
    padding: 0.72rem;
    transform: rotateY(180deg);
    text-align: left;
}

.panel-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--panel-text);
    line-height: 1.25;
}

.panel-description {
    margin: 0;
    font-size: 0.84rem;
    color: var(--panel-text-soft);
    line-height: 1.45;
}

.panel-tags {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.tags-label {
    margin: 0;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08rem;
    font-weight: 700;
    color: var(--panel-text-soft);
}

.tag-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.tag-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.18rem 0.5rem;
    border-radius: 999px;
    border: 1px solid color-mix(in srgb, var(--panel-border) 85%, transparent);
    background: color-mix(in srgb, var(--panel-shell-end) 60%, var(--panel-shell-start) 40%);
    color: var(--panel-text);
    font-size: 0.73rem;
    font-weight: 700;
    line-height: 1.2;
}

.panel-link {
    align-self: flex-start;
    font-size: 0.86rem;
    color: var(--brand-deep);
    font-weight: 700;
}

.flip-toggle {
    min-height: 1.95rem;
    padding: 0 0.72rem;
    border-radius: 999px;
    border: 1px solid var(--pill-border);
    background: rgba(88, 195, 175, 0.12);
    color: var(--brand-deep);
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform 170ms ease, box-shadow 170ms ease, background-color 170ms ease;
    white-space: nowrap;
}

.flip-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 18px rgba(16, 33, 39, 0.12);
    background: rgba(88, 195, 175, 0.2);
}

.flip-toggle:focus-visible {
    outline: 2px solid rgba(13, 143, 131, 0.35);
    outline-offset: 2px;
}

.panel {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 0.82rem;
    overflow: hidden;
    border: 1px solid var(--panel-border);
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(145deg, var(--panel-shell-start), var(--panel-shell-end));
    cursor: pointer;
    transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}

.panel::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(16, 33, 39, 0.1));
    pointer-events: none;
}

.panel:hover {
    transform: translateY(-4px);
    border-color: rgba(88, 195, 175, 0.45);
    box-shadow: 0 20px 30px rgba(16, 33, 39, 0.16);
}

.panel img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 260ms ease;
}

.panel:hover img {
    transform: scale(1.03);
}

#addtile {
    border-style: dashed;
    border-width: 2px;
    background: linear-gradient(145deg, #fafffd, #e6f4ee);
}

#plus {
    transform: scale(0.24);
    transition: transform 170ms ease;
}

#addtile:hover #plus {
    transform: scale(0.3);
}

#addpage {
    position: fixed;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: min(620px, 92vw);
    border: 1px solid #bcd4cc;
    border-radius: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    align-items: stretch;
    background: var(--modal-bg);
    padding: 1.4rem;
    box-shadow: 0 26px 52px rgba(16, 33, 39, 0.25);
    z-index: 20;
}

#addpage h2 {
    margin: 0 0 0.4rem;
    font-family: "Fraunces", Georgia, serif;
    font-size: clamp(1.3rem, 3vw, 1.7rem);
    text-align: center;
}

#addpage input,
#addpage select {
    width: 100%;
    min-height: 2.8rem;
    font-size: 1rem;
    padding: 0 0.8rem;
    border-radius: 0.65rem;
    border: 1px solid #c1d8d1;
    background: var(--field-bg);
    color: var(--text-main);
}

#addpage input:focus,
#addpage select:focus {
    outline: none;
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(13, 143, 131, 0.2);
}

#addsave {
    margin-top: 0.4rem;
    border: 1px solid #c6d8d2;
    border-radius: 0.8rem;
    overflow: hidden;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

#cancel,
#add {
    min-height: 2.85rem;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.96rem;
    font-weight: 700;
    cursor: pointer;
    transition: filter 170ms ease, transform 170ms ease;
}

#cancel {
    background: #f7d9d3;
    color: #7f2e21;
}

#add {
    background: #caefe3;
    color: #0c645b;
}

#cancel:hover,
#add:hover {
    transform: translateY(-1px);
    filter: brightness(0.96);
}

@media (max-width: 860px) {
    #bar {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    #welcome {
        justify-self: flex-start;
    }

    .quick-actions {
        justify-content: flex-start;
        flex-wrap: wrap;
    }
}

@media (max-width: 560px) {
    .page-shell {
        width: 94vw;
        margin-top: 1.1rem;
    }

    #all {
        grid-template-columns: 1fr;
    }

    .page-shell::before,
    .page-shell::after {
        opacity: 0.75;
    }
}