:root {
    --navy: #2d3250;
    --navy-rgb: 45, 50, 80;
    --navy2: #222640;
    --navy2-rgb: 34, 38, 64;
    --violet: #676f9d;
    --violet-rgb: 103, 111, 157;
    --peach: #f9b17a;
    --peach-rgb: 249, 177, 122;
    --coral: #ff7e67;
    --coral-rgb: 255, 126, 103;
    --teal: #7fb5b5;
    --teal-rgb: 127, 181, 181;
    --white: #ffffff;
    --beige: #F8F5F2;
    --dark-modal: #0F0F0F;
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Poppins', sans-serif;
    --radius: 14px;
    --nav-h: 64px;
}

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

body {
    min-height: 100vh;
    background: var(--navy);
    font-family: var(--font-sans);
    color: var(--white);
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

/* ── Ambient BG ── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(ellipse 60% 50% at 10% 15%, rgba(103, 111, 157, .3) 0%, transparent 60%),
        radial-gradient(ellipse 45% 40% at 90% 85%, rgba(255, 126, 103, .18) 0%, transparent 55%),
        radial-gradient(ellipse 35% 30% at 80% 5%, rgba(127, 181, 181, .18) 0%, transparent 50%);
}

/* ── TOP NAVBAR ── */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
    height: var(--nav-h);
    background: rgba(34, 38, 64, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    display: flex;
    align-items: center;
    padding: 0 2.5rem;
    gap: 2rem;
}

.nav-logo {
    height: 28px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: .9;
    flex-shrink: 0;
}

.nav-divider {
    width: 1px;
    height: 28px;
    background: rgba(255, 255, 255, .12);
    flex-shrink: 0;
}

.nav-tabs {
    display: flex;
    gap: .4rem;
    flex: 1;
}

.nav-tab {
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .5rem 1.2rem;
    border-radius: 8px;
    background: transparent;
    border: 1px solid transparent;
    color: rgba(255, 255, 255, .45);
    font-family: var(--font-sans);
    font-size: .82rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .22s ease;
    white-space: nowrap;
}

.nav-tab i {
    font-size: .9rem;
}

.nav-tab:hover {
    background: rgba(255, 255, 255, .07);
    color: rgba(255, 255, 255, .8);
}

.nav-tab.active {
    background: linear-gradient(135deg, rgba(249, 177, 122, .2), rgba(255, 126, 103, .2));
    border-color: var(--peach);
    color: var(--peach);
}

/* ── MAIN CONTENT AREA ── */
.content {
    position: relative;
    z-index: 1;
    padding: 2.5rem 3rem 4rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* ── INPUT BAR (full width horizontal) ── */
.input-bar {
    width: 100%;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: var(--radius);
    padding: 1.25rem 1.75rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-bar-title {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 600;
}

.input-bar-title em {
    font-style: italic;
    background: linear-gradient(135deg, var(--peach), var(--coral));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* single input row */
.input-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.input-label-group {
    display: flex;
    flex-direction: column;
    gap: .25rem;
    flex-shrink: 0;
}

.field-label {
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--peach);
}

.field-hint {
    font-size: .7rem;
    color: rgba(255, 255, 255, .35);
}

.field-input {
    flex: 1;
    min-width: 220px;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: 10px;
    padding: .85rem 1.2rem;
    font-family: var(--font-sans);
    font-size: .95rem;
    color: var(--white);
    outline: none;
    transition: border-color .25s, box-shadow .25s, background .25s;
}

.field-input::placeholder {
    color: rgba(255, 255, 255, .28);
}

.field-input:focus {
    border-color: var(--peach);
    background: rgba(255, 255, 255, .11);
    box-shadow: 0 0 0 3px rgba(249, 177, 122, .16);
}

.field-input.error {
    border-color: var(--coral);
    box-shadow: 0 0 0 3px rgba(255, 126, 103, .2);
}

/* Date input styling */
input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    opacity: 0.5;
    cursor: pointer;
}

input[type="date"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

.gen-btn {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: .55rem;
    padding: .85rem 2rem;
    background: linear-gradient(135deg, var(--peach), var(--coral));
    color: var(--white);
    border: none;
    border-radius: 10px;
    font-family: var(--font-sans);
    font-size: .9rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(var(--coral-rgb), .3);
    transition: transform .25s cubic-bezier(.2, 1, .2, 1), box-shadow .25s;
}

.gen-btn:hover {
    box-shadow: 0 12px 28px rgba(var(--coral-rgb), .45);
}

/* pack: two input rows */
.pack-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    align-items: end;
}

/* ── RESULTS GRID ── */
.results-area {
    width: 100%;
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
    transition: opacity .4s ease, transform .4s cubic-bezier(.2, 1, .2, 1);
}

/* album: 4 equal columns */
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    align-items: start;
}

/* album: 3 equal columns */
.grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

/* invite: 2 columns */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

/* pack: invite section | album section */
.pack-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: start;
}

.pack-section-title {
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    padding-bottom: 1rem;
    margin-bottom: .25rem;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.pack-section-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-top: 1rem;
}

/* ── CARD ── */
.card {
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    height: fit-content;
    min-width: 0;
}

.card-label {
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--peach);
    margin-bottom: .7rem;
}

/* ── LINK DISPLAY ── */
.link-display {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 10px;
    padding: .6rem 1rem;
    font-size: .83rem;
    color: rgba(255, 255, 255, .7);
    word-break: break-all;
    margin-bottom: .6rem;
}

.link-actions {
    display: flex;
    gap: .6rem;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 9px;
    background: rgba(255, 255, 255, .07);
    border: 1px solid rgba(255, 255, 255, .12);
    color: rgba(255, 255, 255, .7);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: .9rem;
    transition: all .22s ease;
    text-decoration: none;
}

.icon-btn:hover {
    background: rgba(249, 177, 122, .2);
    border-color: var(--peach);
    color: var(--peach);
}

.icon-btn.copied {
    background: rgba(127, 181, 181, .2);
    border-color: var(--teal);
    color: var(--teal);
}

/* ── QR CARD ── */
.qr-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.qr-wrap {
    background: #fff;
    border-radius: 12px;
    padding: 14px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, .22);
    width: 268px;
    /* 240px qr + 28px padding */
    height: 268px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.qr-wrap canvas {
    max-width: 100% !important;
    max-height: 100% !important;
    height: auto !important;
    width: auto !important;
}

.qr-actions {
    display: flex;
    gap: .6rem;
    flex-wrap: wrap;
    justify-content: center;
}

.qr-btn {
    display: flex;
    align-items: center;
    gap: .45rem;
    padding: .5rem 1.1rem;
    background: rgba(255, 255, 255, .07);
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 8px;
    color: rgba(255, 255, 255, .75);
    font-family: var(--font-sans);
    font-size: .78rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .22s;
}

.qr-btn:hover {
    background: rgba(127, 181, 181, .18);
    border-color: var(--teal);
    color: var(--teal);
}

/* ── UPLOAD CARD ── */
.upload-select-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .6rem;
    padding: .8rem;
    background: rgba(255, 255, 255, .06);
    border: 1.5px dashed rgba(255, 255, 255, .22);
    border-radius: 10px;
    color: rgba(255, 255, 255, .65);
    font-family: var(--font-sans);
    font-size: .88rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .22s ease;
    margin-bottom: .75rem;
}

.upload-select-btn:hover {
    background: rgba(255, 255, 255, .1);
    border-color: rgba(255, 255, 255, .45);
    color: #fff;
}

.upload-action-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    padding: .7rem;
    background: rgba(249, 177, 122, .12);
    border: 1px solid rgba(249, 177, 122, .3);
    border-radius: 10px;
    color: var(--peach);
    font-family: var(--font-sans);
    font-size: .85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .22s;
    margin-bottom: .75rem;
}

.upload-action-btn:hover {
    background: rgba(249, 177, 122, .2);
}

.chosen-label {
    font-size: .8rem;
    color: rgba(255, 255, 255, .5);
    text-align: center;
    margin-bottom: .6rem;
    display: none;
}

.upload-progress-wrap {
    display: none;
    margin-top: .75rem;
}

.progress-track {
    background: rgba(255, 255, 255, .1);
    border-radius: 50px;
    height: 5px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--peach), var(--coral));
    border-radius: 50px;
    transition: width .3s ease;
}

.progress-status {
    font-size: .76rem;
    color: rgba(255, 255, 255, .45);
    text-align: center;
    margin-top: .5rem;
}

/* ── FOOTER ── */
.footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding-bottom: 2rem;
    font-size: .72rem;
    color: rgba(255, 255, 255, .22);
    letter-spacing: .04em;
    margin-top: auto;
    padding-top: 2rem;
}

/* Hide main content while locked (Deprecated by server-side) */
body.locked .navbar,
body.locked .content,
body.locked .footer {
    display: none !important;
}

/* ── SLIDESHOW CARD ── */
.ss-link-display {
    background: rgba(127, 181, 181, .08);
    border: 1px solid rgba(127, 181, 181, .2);
    border-radius: 10px;
    padding: .6rem 1rem;
    font-size: .78rem;
    color: rgba(255, 255, 255, .6);
    word-break: break-all;
    margin-bottom: .6rem;
}

.ss-badge {
    display: inline-flex;
    align-items: center;
    gap: .35rem;
    font-size: .65rem;
    font-weight: 600;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--teal);
    margin-bottom: .6rem;
}

.ss-badge i {
    font-size: .75rem;
}

@media (max-width: 900px) {
    .content {
        padding: 1.5rem 1.2rem 3rem;
    }

    .grid-3 {
        grid-template-columns: 1fr 1fr;
    }

    .pack-grid {
        grid-template-columns: 1fr;
    }

    .pack-section-inner {
        grid-template-columns: 1fr;
    }

    .pack-inputs {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .navbar {
        padding: 0 1rem;
        gap: 1rem;
    }

    .nav-tab span {
        display: none;
    }

    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .input-row {
        flex-direction: column;
        align-items: stretch;
    }

    .gen-btn {
        justify-content: center;
    }
}

#nav-btn-download {
    margin-left: auto;
    color: var(--teal);
}

/* Modal refine */
.hidden {
    display: none !important;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

#download-modal .pin-card {
    animation: modalFadeIn 0.3s cubic-bezier(0.2, 1, 0.2, 1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(15, 18, 35, 0.95);
    backdrop-filter: blur(25px);
}

.dl-section-progress {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* ── DATE TAGS GRID (Responsive) ── */
.date-tags-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    align-items: start;
}

.date-sep {
    border-left: 1px solid rgba(255, 255, 255, 0.07);
    padding-left: 1.5rem;
}

/* ── TOGGLE SWITCH ── */
.switch-container {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    cursor: pointer;
    user-select: none;
    height: 100%;
}

.toggle-switch {
    width: 36px;
    height: 20px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    position: relative;
    transition: background 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.15);
    flex-shrink: 0;
}

.toggle-switch::before {
    content: '';
    position: absolute;
    width: 14px;
    height: 14px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform 0.3s;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

input:checked+.toggle-switch {
    background: var(--teal);
    border-color: var(--teal);
}

input:checked+.toggle-switch::before {
    transform: translateX(16px);
}

.switch-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    transition: color 0.3s;
}

input:checked~.switch-label {
    color: var(--teal);
}

@media (max-width: 800px) {
    .date-tags-grid {
        grid-template-columns: 1fr !important;
        gap: 1.2rem !important;
    }

    .date-tags-grid>div,
    .date-sep {
        border-left: none !important;
        padding-left: 0 !important;
    }
}