/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-from: #1a0a2e;
    --bg-mid: #2d1045;
    --bg-to: #0f1a35;
    --glass: rgba(255,255,255,0.06);
    --glass-border: rgba(255,255,255,0.12);
    --glass-hover: rgba(255,255,255,0.1);
    --accent: #ff6b9d;
    --accent-2: #c77dff;
    --accent-gradient: linear-gradient(135deg, #ff6b9d, #c77dff);
    --gold: #ffd166;
    --text: #f0e6ff;
    --text-muted: rgba(240,230,255,0.55);
    --success: #06d6a0;
    --danger: #ff4d6d;
    --radius: 20px;
    --radius-sm: 12px;
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --shadow-card: 0 4px 24px rgba(0,0,0,0.3);
    --nav-height: 72px;
}

html { font-size: 16px; -webkit-tap-highlight-color: transparent; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--bg-from) 0%, var(--bg-mid) 50%, var(--bg-to) 100%);
    min-height: 100vh;
    color: var(--text);
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(199,125,255,0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(255,107,157,0.12) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* ===== LAYOUT ===== */
.page { position: relative; z-index: 1; padding: 24px 20px calc(var(--nav-height) + 24px); max-width: 480px; margin: 0 auto; }
.page-auth { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px 20px; }

/* ===== GLASS CARD ===== */
.card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 24px;
    box-shadow: var(--shadow-card);
}

.card-sm { padding: 16px 20px; border-radius: var(--radius-sm); }

/* ===== LOGIN ===== */
.login-wrap { width: 100%; max-width: 380px; }

.login-logo {
    text-align: center;
    margin-bottom: 36px;
}
.login-logo .heart {
    font-size: 56px;
    display: block;
    margin-bottom: 12px;
    filter: drop-shadow(0 0 20px rgba(255,107,157,0.6));
    animation: pulse 2.5s ease-in-out infinite;
}
.login-logo h1 { font-size: 26px; font-weight: 800; letter-spacing: -0.5px; }
.login-logo h1 span { background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.login-logo p { color: var(--text-muted); font-size: 14px; margin-top: 6px; }

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

/* ===== FORMS ===== */
.form-group { margin-bottom: 16px; }
.form-label { display: block; font-size: 12px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 8px; }

.form-input {
    width: 100%;
    padding: 14px 16px;
    background: rgba(255,255,255,0.07);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 15px;
    font-family: inherit;
    transition: border-color 0.2s, background 0.2s;
    outline: none;
    -webkit-appearance: none;
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:focus { border-color: var(--accent); background: rgba(255,255,255,0.1); }

select.form-input { cursor: pointer; }
select.form-input option { background: #2d1045; color: var(--text); }

/* ===== BUTTONS ===== */
.btn {
    display: flex; align-items: center; justify-content: center; gap: 8px;
    width: 100%; padding: 15px 24px;
    border: none; border-radius: var(--radius-sm);
    font-size: 15px; font-weight: 700; font-family: inherit;
    cursor: pointer; transition: transform 0.15s, opacity 0.15s, box-shadow 0.15s;
    text-decoration: none;
    -webkit-appearance: none;
}
.btn:active { transform: scale(0.97); }

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 20px rgba(255,107,157,0.4);
}
.btn-primary:hover { opacity: 0.9; box-shadow: 0 6px 28px rgba(255,107,157,0.5); }

.btn-danger {
    background: rgba(255,77,109,0.15);
    border: 1px solid rgba(255,77,109,0.3);
    color: var(--danger);
    font-size: 13px;
    padding: 10px 16px;
    width: auto;
    border-radius: 10px;
}
.btn-danger:hover { background: rgba(255,77,109,0.25); }

.btn-ghost {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    color: var(--text);
    font-size: 14px;
}

/* ===== TOP BAR ===== */
.topbar {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 28px;
    padding-top: 8px;
}
.topbar-greeting { font-size: 13px; color: var(--text-muted); }
.topbar-name { font-size: 20px; font-weight: 800; letter-spacing: -0.3px; }
.topbar-name span { background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.avatar {
    width: 44px; height: 44px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 800; color: #fff;
    box-shadow: 0 4px 16px rgba(255,107,157,0.4);
    flex-shrink: 0;
}

/* ===== SCORE CARDS ===== */
.score-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 24px; }

.score-card {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
.score-card::before {
    content: '';
    position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: var(--accent-gradient);
}
.score-card.mine::before { background: linear-gradient(90deg, #c77dff, #7b2fff); }
.score-card.theirs::before { background: linear-gradient(90deg, #ff6b9d, #ff4d6d); }

.score-label { font-size: 11px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.8px; margin-bottom: 8px; }
.score-name { font-size: 14px; font-weight: 700; margin-bottom: 12px; }
.score-number {
    font-size: 38px; font-weight: 900; letter-spacing: -2px;
    background: var(--accent-gradient);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    line-height: 1;
}
.score-card.mine .score-number { background: linear-gradient(135deg, #c77dff, #7b2fff); -webkit-background-clip: text; }
.score-pts { font-size: 11px; color: var(--text-muted); margin-top: 4px; font-weight: 600; letter-spacing: 0.5px; }

/* ===== SECTION TITLE ===== */
.section-title {
    font-size: 13px; font-weight: 700; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.8px;
    margin-bottom: 14px;
    display: flex; align-items: center; gap: 8px;
}
.section-title::after {
    content: ''; flex: 1; height: 1px;
    background: var(--glass-border);
}

/* ===== TRANSACTION LIST ===== */
.tx-list { display: flex; flex-direction: column; gap: 10px; }

.tx-item {
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    display: flex; align-items: center; gap: 12px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background 0.2s;
}

.tx-icon {
    width: 40px; height: 40px;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; flex-shrink: 0;
}
.tx-icon.suma { background: rgba(6,214,160,0.15); }
.tx-icon.resta { background: rgba(255,77,109,0.15); }

.tx-info { flex: 1; min-width: 0; }
.tx-concepto { font-size: 14px; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.tx-meta { font-size: 12px; color: var(--text-muted); margin-top: 3px; }

.tx-pts {
    font-size: 18px; font-weight: 900; flex-shrink: 0;
}
.tx-pts.suma { color: var(--success); }
.tx-pts.resta { color: var(--danger); }

.tx-actions { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; }

/* ===== PAGE HEADER ===== */
.page-header { margin-bottom: 28px; }
.page-header h2 { font-size: 26px; font-weight: 900; letter-spacing: -0.5px; }
.page-header p { color: var(--text-muted); font-size: 14px; margin-top: 4px; }

/* ===== RECIPIENT BADGE ===== */
.recipient-badge {
    display: flex; align-items: center; gap: 12px;
    background: var(--glass);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    margin-bottom: 24px;
}
.recipient-badge .avatar-sm {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; font-weight: 800; color: #fff;
}
.recipient-badge-info { font-size: 13px; color: var(--text-muted); }
.recipient-badge-name { font-size: 15px; font-weight: 700; }

/* ===== TIPO TOGGLE ===== */
.tipo-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-bottom: 20px; }
.tipo-btn {
    padding: 12px; border-radius: var(--radius-sm);
    border: 1px solid var(--glass-border);
    background: var(--glass);
    color: var(--text-muted);
    font-size: 14px; font-weight: 600; font-family: inherit;
    cursor: pointer; transition: all 0.2s;
    display: flex; align-items: center; justify-content: center; gap: 6px;
}
.tipo-btn.active-suma { background: rgba(6,214,160,0.15); border-color: var(--success); color: var(--success); }
.tipo-btn.active-resta { background: rgba(255,77,109,0.15); border-color: var(--danger); color: var(--danger); }

/* ===== ALERT ===== */
.alert {
    padding: 12px 16px; border-radius: var(--radius-sm);
    margin-bottom: 20px; font-size: 14px; font-weight: 500;
}
.alert-success { background: rgba(6,214,160,0.15); border: 1px solid rgba(6,214,160,0.3); color: var(--success); }
.alert-error { background: rgba(255,77,109,0.15); border: 1px solid rgba(255,77,109,0.3); color: var(--danger); }

/* ===== EMPTY STATE ===== */
.empty {
    text-align: center; padding: 40px 20px;
    color: var(--text-muted); font-size: 14px;
}
.empty .empty-icon { font-size: 40px; margin-bottom: 12px; opacity: 0.5; }

/* ===== FILTERS ===== */
.filter-row {
    display: flex; gap: 8px; margin-bottom: 20px; overflow-x: auto; padding-bottom: 4px;
    scrollbar-width: none;
}
.filter-row::-webkit-scrollbar { display: none; }

.filter-chip {
    padding: 8px 16px;
    border-radius: 50px;
    border: 1px solid var(--glass-border);
    background: var(--glass);
    color: var(--text-muted);
    font-size: 13px; font-weight: 600; font-family: inherit;
    cursor: pointer; white-space: nowrap; transition: all 0.2s;
    text-decoration: none;
}
.filter-chip.active { background: var(--accent-gradient); border-color: transparent; color: #fff; }

/* ===== BOTTOM NAV ===== */
.bottom-nav {
    position: fixed; bottom: 0; left: 0; right: 0;
    height: var(--nav-height);
    background: rgba(26, 10, 46, 0.85);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-top: 1px solid var(--glass-border);
    display: flex; align-items: center; justify-content: space-around;
    z-index: 100;
    padding-bottom: env(safe-area-inset-bottom);
}

.nav-item {
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    text-decoration: none; color: var(--text-muted);
    font-size: 11px; font-weight: 600; letter-spacing: 0.3px;
    padding: 8px 20px; border-radius: 16px;
    transition: all 0.2s;
    position: relative;
}
.nav-item.active { color: var(--accent); }
.nav-item .nav-icon { font-size: 22px; transition: transform 0.2s; }
.nav-item.active .nav-icon { transform: scale(1.1); }

.nav-item.add-btn {
    background: var(--accent-gradient);
    color: #fff;
    padding: 12px 20px;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(255,107,157,0.5);
    margin-top: -8px;
}
.nav-item.add-btn .nav-icon { font-size: 26px; }

/* ===== DIVIDER ===== */
.divider { height: 1px; background: var(--glass-border); margin: 20px 0; }

/* ===== HISTORIAL PAGE ===== */
.date-group-label {
    font-size: 12px; font-weight: 700; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.8px;
    margin: 20px 0 10px; display: flex; align-items: center; gap: 8px;
}
.date-group-label::after { content: ''; flex: 1; height: 1px; background: var(--glass-border); }

/* ===== MODAL CONFIRM ===== */
.modal-overlay {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(6px);
    z-index: 200;
    display: flex; align-items: flex-end; justify-content: center;
    opacity: 0; pointer-events: none;
    transition: opacity 0.25s;
}
.modal-overlay.show { opacity: 1; pointer-events: all; }

.modal-sheet {
    background: #1e0d38;
    border: 1px solid var(--glass-border);
    border-radius: 28px 28px 0 0;
    padding: 32px 24px 40px;
    width: 100%; max-width: 480px;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.32, 0.72, 0, 1);
}
.modal-overlay.show .modal-sheet { transform: translateY(0); }

.modal-handle { width: 40px; height: 4px; background: var(--glass-border); border-radius: 2px; margin: 0 auto 24px; }
.modal-title { font-size: 20px; font-weight: 800; margin-bottom: 8px; }
.modal-desc { color: var(--text-muted); font-size: 14px; margin-bottom: 28px; line-height: 1.5; }
.modal-actions { display: flex; flex-direction: column; gap: 10px; }
.btn-cancel { background: var(--glass); border: 1px solid var(--glass-border); color: var(--text); }

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 0; }