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

:root {
    --bg: #FAFAFA;
    --text: #0A0A0A;
    --text2: #555;
    --text3: #999;
    --accent: #0A0A0A;
    --pop: #FF3B30;
    --border: #E5E5E5;
    --card: #FFFFFF;
    --card-hover: #F5F5F5;
    --radius: 16px;
    --safe-top: env(safe-area-inset-top, 0px);
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100dvh;
    line-height: 1.3;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
}

.screen {
    display: none;
    flex-direction: column;
    min-height: 100dvh;
    padding-top: var(--safe-top);
    padding-bottom: var(--safe-bottom);
}
.screen.active { display: flex; }

/* ============================
   WELCOME
   ============================ */
.welcome-wrap {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 0 28px;
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
    min-height: 100dvh;
}

.welcome-top {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.welcome-pre {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text2);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.rotating-emoji {
    font-size: 3rem;
    line-height: 1;
    margin-bottom: 8px;
    transition: opacity 0.3s, transform 0.3s;
}

.rotating-emoji.out {
    opacity: 0;
    transform: translateY(-20px);
}

.rotating-wrap {
    display: flex;
    align-items: baseline;
    justify-content: flex-start;
    overflow: hidden;
    height: 1.15em;
    line-height: 1;
    font-size: clamp(2.2rem, 10vw, 3.8rem);
    font-weight: 700;
    letter-spacing: -0.05em;
    max-width: 100%;
}

.rotating-word {
    display: inline-block;
    transition: opacity 0.3s, transform 0.3s;
}

.rotating-word.out {
    opacity: 0;
    transform: translateY(-100%);
}

.rotating-word.in {
    opacity: 1;
    transform: translateY(0);
}

.dot-com, .carousel-dot, .dim {
    color: #E8E8E8;
    font-weight: 400;
}

.welcome-bottom {
    padding-bottom: 48px;
}

.welcome-fine {
    font-size: 0.7rem;
    color: var(--text3);
    text-align: center;
    margin-top: 14px;
    letter-spacing: 0.02em;
}

/* ============================
   BUTTONS
   ============================ */
.btn-main {
    display: block;
    width: 100%;
    padding: 18px;
    font-size: 1.05rem;
    font-weight: 600;
    font-family: inherit;
    letter-spacing: -0.02em;
    color: white;
    background: var(--text);
    border: none;
    border-radius: 14px;
    cursor: pointer;
    transition: transform 0.1s, opacity 0.1s;
    -webkit-appearance: none;
}
.btn-main:active { transform: scale(0.98); opacity: 0.85; }

.btn-secondary {
    display: block;
    width: 100%;
    padding: 16px;
    font-size: 0.9rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--text2);
    background: none;
    border: 1.5px solid var(--border);
    border-radius: 14px;
    cursor: pointer;
    -webkit-appearance: none;
}
.btn-secondary:active { background: var(--card-hover); }

.btn-back {
    font-size: 0.88rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--text);
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 0;
    -webkit-appearance: none;
}

.btn-text-danger {
    font-size: 0.82rem;
    font-weight: 600;
    font-family: inherit;
    color: var(--pop);
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px 0;
    -webkit-appearance: none;
}

.btn-go {
    padding: 14px 28px;
    font-size: 0.95rem;
    font-weight: 700;
    font-family: inherit;
    color: white;
    background: var(--text);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    flex-shrink: 0;
    -webkit-appearance: none;
}
.btn-go:active { opacity: 0.85; }

/* ============================
   CATEGORY PICKER
   ============================ */
.picker-wrap {
    flex: 1;
    padding: 48px 28px;
    padding-bottom: calc(48px + var(--safe-bottom));
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
}

.picker-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    padding-top: calc(12px + var(--safe-top));
}

.picker-pre {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text2);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.carousel-area {
    text-align: center;
    padding: 40px 0 24px;
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
    transition: transform 0.1s;
}

.carousel-area:active { transform: scale(0.97); }

.carousel-emoji {
    font-size: 3rem;
    line-height: 1;
    margin-bottom: 12px;
    transition: opacity 0.25s, transform 0.25s;
}

.carousel-emoji.out { opacity: 0; transform: translateY(-20px); }

.carousel-word {
    font-size: clamp(1.8rem, 10vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.05em;
    line-height: 1;
    color: var(--text);
    transition: opacity 0.25s, transform 0.25s;
}

.carousel-word.out { opacity: 0; transform: translateY(-30px); }

.carousel-dot { color: var(--text3); font-weight: 500; }

.carousel-hint {
    font-size: 0.78rem;
    color: var(--text3);
    margin-top: 16px;
    font-weight: 500;
    transition: opacity 0.2s;
}

.carousel-hint.paused {
    color: var(--text);
    font-weight: 600;
}

.picker-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 24px 0;
}

.picker-divider::before,
.picker-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border);
}

.picker-or {
    font-size: 0.8rem;
    color: var(--text3);
    font-weight: 500;
}

.picker-custom {
    display: flex;
    gap: 10px;
}

.picker-input {
    flex: 1;
    padding: 14px 16px;
    font-size: 0.95rem;
    font-family: inherit;
    font-weight: 500;
    border: 1.5px solid var(--border);
    border-radius: 12px;
    background: var(--card);
    color: var(--text);
    outline: none;
    -webkit-appearance: none;
}

.picker-input:focus { border-color: var(--text); }

.picker-input::placeholder { color: var(--text3); }

/* ============================
   LOADING
   ============================ */
#loading { align-items: center; justify-content: center; }

.loading-wrap {
    text-align: center;
    padding: 32px 28px;
    max-width: 400px;
}

.loading-word {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-bottom: 32px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.progress-wrap {
    width: 100%;
    height: 3px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 20px;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background: var(--text);
    border-radius: 3px;
    transition: width 0.4s ease;
}

.loading-msg {
    font-size: 0.88rem;
    color: var(--text3);
    font-weight: 500;
}

/* ============================
   RESULTS
   ============================ */
.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    padding-top: calc(12px + var(--safe-top));
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: var(--bg);
    z-index: 100;
}

.results-body {
    flex: 1;
    padding: 28px 24px;
    padding-bottom: calc(48px + var(--safe-bottom));
    max-width: 520px;
    margin: 0 auto;
    width: 100%;
}

.results-pre {
    font-size: 0.95rem;
    color: var(--text2);
    font-weight: 500;
    margin-bottom: 4px;
}

/* Spend stack — escalating sizes */
.results-stack {
    margin-bottom: 12px;
}

.result-row {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 2px 0;
}

.row-amount {
    font-weight: 700;
    letter-spacing: -0.04em;
    color: var(--text);
}

.row-label {
    font-weight: 500;
    color: var(--text3);
}

.row-30 .row-amount { font-size: 1.5rem; }
.row-30 .row-label { font-size: 0.78rem; }

.row-90 .row-amount { font-size: 2.4rem; }
.row-90 .row-label { font-size: 0.85rem; }

.row-1yr .row-amount { font-size: 3.8rem; }
.row-1yr .row-label { font-size: 0.95rem; }

.results-on {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.results-meta {
    font-size: 0.75rem;
    color: var(--text3);
    margin-bottom: 32px;
}

/* ============================
   TRANSACTION SECTIONS
   ============================ */
.txn-sections {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 8px;
}

.txn-section {
    background: var(--card);
    border: 1.5px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
}

.txn-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 16px;
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
}

.txn-section-header:active { background: var(--card-hover); }

.txn-section-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.txn-section-icon { font-size: 1.2rem; }
.txn-section-name { font-size: 0.88rem; font-weight: 600; }

.txn-section-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.txn-section-total {
    font-size: 0.9rem;
    font-weight: 700;
}

.txn-section-count {
    font-size: 0.68rem;
    color: var(--text3);
    background: var(--bg);
    padding: 2px 7px;
    border-radius: 8px;
    font-weight: 600;
}

.txn-chevron {
    font-size: 0.75rem;
    color: var(--text3);
    transition: transform 0.2s;
}

.txn-section.open .txn-chevron { transform: rotate(90deg); }

.txn-section-body {
    display: none;
    border-top: 1px solid var(--border);
}

.txn-section.open .txn-section-body { display: block; }

.txn-row {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    gap: 12px;
    border-bottom: 1px solid #F2F2F2;
}
.txn-row:last-child { border-bottom: none; }

.txn-info { flex: 1; min-width: 0; }

.txn-name {
    font-size: 0.84rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.txn-detail {
    font-size: 0.7rem;
    color: var(--text3);
    margin-top: 1px;
}

.txn-amount {
    font-size: 0.88rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* ============================
   ERROR TOAST
   ============================ */
.error-toast {
    position: fixed;
    bottom: calc(24px + var(--safe-bottom));
    left: 50%;
    transform: translateX(-50%);
    background: var(--pop);
    color: white;
    padding: 12px 24px;
    border-radius: 12px;
    font-size: 0.82rem;
    font-weight: 600;
    z-index: 2000;
    display: none;
    max-width: 90%;
    text-align: center;
}
.error-toast.show { display: block; }

/* ============================
   RESPONSIVE
   ============================ */
@media (min-width: 600px) {
    .rotating-wrap { font-size: 5rem; }
    .row-1yr .row-amount { font-size: 4.5rem; }
    .picker-grid { grid-template-columns: 1fr 1fr 1fr; }
}