/* ================================================================
   AGE-DIFFERENCE.CSS  —  Premium Age Difference Calculator
   ================================================================ */

/* ══════════════════════════════════════════════════════════════════
   INPUT GRID  (two date pickers side-by-side)
══════════════════════════════════════════════════════════════════ */
.agediff-input-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.1rem;
    margin-bottom: 1.5rem;
}

.agediff-input-group { display: flex; flex-direction: column; }

.agediff-input-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: .88rem;
    font-weight: 600;
    color: var(--text-soft);
    margin-bottom: .5rem;
}

/* "Use Today" micro-button */
.btn-use-today {
    font-size: .72rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--primary-light);
    border: 1px solid rgba(79,70,229,.2);
    border-radius: 50px;
    padding: .18rem .65rem;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
    letter-spacing: .02em;
    line-height: 1.4;
}
.btn-use-today:hover {
    background: var(--primary);
    color: #fff;
}

.agediff-input-icon-wrap { position: relative; }

.agediff-date-input {
    width: 100%;
    padding: .9rem 1rem .9rem 2.9rem;
    font-size: 1rem;
    font-family: inherit;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    background: #fff;
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

.agediff-date-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3.5px rgba(79,70,229,.13);
}

.agediff-date-input[aria-invalid="true"] {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239,68,68,.1);
}

.agediff-input-cal {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.05rem;
    pointer-events: none;
    user-select: none;
}

.agediff-input-error {
    display: none;
    font-size: .8rem;
    color: #ef4444;
    margin-top: .38rem;
    font-weight: 500;
}
.agediff-input-error.visible { display: block; }

/* Include end-date toggle */
.agediff-toggle-row {
    display: flex;
    align-items: center;
    gap: .65rem;
    margin-bottom: 1.35rem;
    font-size: .88rem;
    color: var(--text-soft);
    font-weight: 500;
    cursor: pointer;
    user-select: none;
}

.agediff-toggle-row input[type="checkbox"] {
    width: 1rem; height: 1rem;
    accent-color: var(--primary);
    cursor: pointer;
    flex-shrink: 0;
}

/* ══════════════════════════════════════════════════════════════════
   RESULT CARD
══════════════════════════════════════════════════════════════════ */
.agediff-result-card {
    max-width: 660px;
    margin: 1.6rem auto 0;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .4s cubic-bezier(.4,0,.2,1),
                transform .4s cubic-bezier(.4,0,.2,1);
}

.agediff-result-card[hidden] { display: none; }

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

/* Gradient accent stripe */
.agediff-result-card::before {
    content: '';
    display: block;
    height: 4px;
    background: linear-gradient(135deg, #4f46e5, #06b6d4);
}

.agediff-result-inner {
    padding: 2rem 2rem 1.8rem;
}

/* ── Summary sentence ── */
.agediff-summary {
    text-align: center;
    margin-bottom: 1.6rem;
}

.agediff-summary-headline {
    font-size: clamp(1rem, 2.5vw, 1.15rem);
    font-weight: 700;
    color: var(--text);
    line-height: 1.5;
    margin: 0 0 .4rem;
}

.agediff-summary-sub {
    font-size: .9rem;
    color: var(--text-muted);
    margin: 0;
}

/* ── Section label (same as Age Calculator) ── */
.agediff-section-label {
    font-size: .74rem;
    font-weight: 700;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0 0 1rem;
}

/* ── PRIMARY ROW: Years / Months / Days ── */
.agediff-primary-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: .85rem;
    margin-bottom: 1.6rem;
}

.agediff-primary-block {
    background: var(--primary-light);
    border-radius: var(--radius);
    padding: 1.25rem .75rem 1rem;
    text-align: center;
}

.agediff-primary-block--hero {
    background: linear-gradient(135deg, #4f46e5, #3730a3);
}

.agediff-primary-block--hero .agediff-primary-value,
.agediff-primary-block--hero .agediff-primary-unit {
    color: #fff !important;
    opacity: 1 !important;
}

.agediff-primary-value {
    display: block;
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
    margin-bottom: .3rem;
    font-variant-numeric: tabular-nums;
    letter-spacing: -1px;
}

.agediff-primary-unit {
    font-size: .68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--primary);
    opacity: .7;
}

/* ── STATS GRID: totals ── */
.agediff-stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .7rem;
    margin-bottom: 1.4rem;
}

.agediff-stat-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: .9rem 1rem;
    display: flex;
    align-items: center;
    gap: .75rem;
    transition: box-shadow var(--transition), border-color var(--transition);
}

.agediff-stat-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-xs);
}

.agediff-stat-icon { font-size: 1.4rem; flex-shrink: 0; }

.agediff-stat-value {
    display: block;
    font-size: 1.08rem;
    font-weight: 800;
    color: var(--text);
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}

.agediff-stat-label {
    font-size: .67rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .07em;
    color: var(--text-muted);
}

/* ── Divider ── */
.agediff-divider {
    height: 1px;
    background: var(--border);
    margin: 1.4rem 0;
}

/* ── Action row ── */
.agediff-action-row {
    display: flex;
    gap: .75rem;
    flex-wrap: wrap;
}

.btn-agediff-copy {
    flex: 1;
    min-width: 140px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    padding: .72rem 1rem;
    font-size: .88rem;
    font-weight: 700;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    background: linear-gradient(135deg, #4f46e5, #06b6d4);
    color: #fff;
    box-shadow: 0 3px 14px rgba(79,70,229,.32);
    letter-spacing: .01em;
}
.btn-agediff-copy:hover {
    opacity: .88;
    transform: translateY(-1px);
    box-shadow: 0 6px 22px rgba(79,70,229,.38);
}

.btn-agediff-reset {
    flex: 1;
    min-width: 120px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .45rem;
    padding: .72rem 1rem;
    font-size: .88rem;
    font-weight: 700;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    border: 1.5px solid var(--border);
    background: var(--bg);
    color: var(--text-muted);
    letter-spacing: .01em;
}
.btn-agediff-reset:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

/* ══════════════════════════════════════════════════════════════════
   TOAST
══════════════════════════════════════════════════════════════════ */
.agediff-toast {
    position: fixed;
    bottom: 1.8rem;
    left: 50%;
    transform: translateX(-50%) translateY(1.5rem);
    background: #0f172a;
    color: #fff;
    font-size: .9rem;
    font-weight: 600;
    padding: .75rem 1.4rem;
    border-radius: 50px;
    box-shadow: 0 8px 30px rgba(0,0,0,.22);
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transition: opacity .25s ease, transform .25s ease;
    z-index: 9999;
}
.agediff-toast--visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ══════════════════════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════════════════════ */
@media (max-width: 600px) {
    .agediff-input-grid     { grid-template-columns: 1fr; }
    .agediff-primary-row    { grid-template-columns: repeat(3, 1fr); gap: .5rem; }
    .agediff-primary-value  { font-size: 1.55rem; }
    .agediff-stats-grid     { grid-template-columns: 1fr 1fr; }
    .agediff-result-inner   { padding: 1.5rem 1.1rem 1.4rem; }
    .agediff-result-card    { border-radius: var(--radius-lg); }
    .tool-card              { border-radius: var(--radius-lg); }

    /* Sponsor: 1 column on mobile */
    .sponsor-grid { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
    .agediff-primary-row    { grid-template-columns: 1fr; }
    .agediff-stats-grid     { grid-template-columns: 1fr; }
    .agediff-action-row > * { flex: 1 1 100%; }
}

@media (min-width: 601px) and (max-width: 860px) {
    .sponsor-grid { grid-template-columns: repeat(2, 1fr); }
}