:root{--color-accent: #ce1126;--color-accent-dark: #a10d1d;--color-bg: #f7f7f8;--color-surface: #ffffff;--color-text: #16181d;--color-text-muted: #5c6270;--color-border: #e5e6ea;--color-success-bg: #eafaf0;--color-success-text: #147a3f;--radius-md: 12px;--radius-lg: 20px;--shadow-card: 0 1px 3px rgba(16, 18, 22, .08);--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:var(--font-family);background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased}.app-shell{max-width:480px;min-height:100vh;margin:0 auto;background:var(--color-bg);display:flex;flex-direction:column}.nav-bar{display:flex;align-items:center;gap:12px;padding:18px 20px;background:var(--color-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:10}.nav-bar__back{background:none;border:none;font-size:20px;line-height:1;color:var(--color-text);cursor:pointer;padding:4px 8px;margin-left:-8px;border-radius:8px}.nav-bar__back:active{background:var(--color-border)}.nav-bar__title{font-size:18px;font-weight:700;margin:0}.screen-body{flex:1;padding:20px;display:flex;flex-direction:column;gap:16px}.biller-card{display:flex;align-items:center;gap:14px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);padding:16px;cursor:pointer;text-align:left;width:100%;font-family:inherit}.biller-card:active{background:var(--color-bg)}.biller-card__logo{width:48px;height:48px;border-radius:10px;background:var(--color-accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:18px;flex-shrink:0}.biller-card__info{flex:1;min-width:0}.biller-card__name{font-weight:700;font-size:16px;margin:0 0 2px}.biller-card__sub{font-size:13px;color:var(--color-text-muted);margin:0}.biller-card__amount{font-weight:700;font-size:16px;white-space:nowrap}.biller-header{display:flex;align-items:center;gap:14px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);padding:18px}.biller-header__logo{width:52px;height:52px;border-radius:12px;background:var(--color-accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:20px;flex-shrink:0}.biller-header__name{font-size:18px;font-weight:700;margin:0 0 2px}.biller-header__account{font-size:13px;color:var(--color-text-muted);margin:0}.amount-due{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);padding:20px;text-align:center}.amount-due__label{font-size:13px;color:var(--color-text-muted);margin:0 0 6px}.amount-due__value{font-size:34px;font-weight:800;margin:0 0 8px;letter-spacing:-.5px}.amount-due__date{font-size:14px;color:var(--color-text-muted);margin:0}.reminder-row{display:flex;align-items:center;justify-content:space-between;gap:12px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);padding:16px 18px}.reminder-row__label{display:flex;flex-direction:column;gap:4px}.reminder-row__title{font-weight:700;font-size:15px}.reminder-toggle{position:relative;width:50px;height:30px;border-radius:999px;border:none;background:var(--color-border);cursor:pointer;padding:0;flex-shrink:0;transition:background .15s ease}.reminder-toggle[aria-checked=true]{background:var(--color-accent)}.reminder-toggle__knob{position:absolute;top:3px;left:3px;width:24px;height:24px;border-radius:50%;background:#fff;box-shadow:0 1px 2px #00000040;transition:transform .15s ease}.reminder-toggle[aria-checked=true] .reminder-toggle__knob{transform:translate(20px)}.reminder-badge{display:inline-flex;align-items:center;gap:6px;align-self:flex-start;background:var(--color-success-bg);color:var(--color-success-text);font-size:13px;font-weight:700;padding:6px 12px;border-radius:999px}.reminder-badge__dot{width:7px;height:7px;border-radius:50%;background:var(--color-success-text)}.cta-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--color-accent);color:#fff;border:none;border-radius:var(--radius-md);padding:14px 20px;font-size:15px;font-weight:700;cursor:pointer;width:100%;font-family:inherit}.cta-button:active{background:var(--color-accent-dark)}.cta-button--secondary{background:var(--color-surface);color:var(--color-accent);border:1px solid var(--color-border)}.overlay-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#10121673;display:flex;align-items:flex-end;justify-content:center;z-index:100}.confirmation-sheet{width:100%;max-width:480px;background:var(--color-surface);border-radius:var(--radius-lg) var(--radius-lg) 0 0;padding:24px 20px 28px;display:flex;flex-direction:column;gap:14px;box-shadow:0 -4px 20px #10121626;animation:slide-up .2s ease-out}@keyframes slide-up{0%{transform:translateY(24px);opacity:0}to{transform:translateY(0);opacity:1}}.confirmation-sheet__icon{width:48px;height:48px;border-radius:50%;background:var(--color-success-bg);color:var(--color-success-text);display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700}.confirmation-sheet__title{font-size:17px;font-weight:700;margin:0}.confirmation-sheet__body{font-size:14px;color:var(--color-text-muted);margin:0;line-height:1.5}.notification-card{background:#23252b;color:#fff;border-radius:var(--radius-lg);padding:16px;box-shadow:0 8px 24px #00000040}.notification-card__header{display:flex;align-items:center;gap:8px;margin-bottom:10px}.notification-card__app-icon{width:22px;height:22px;border-radius:6px;background:var(--color-accent);display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800}.notification-card__app-name{font-size:12px;color:#c7c9d1;font-weight:600;flex:1}.notification-card__time{font-size:12px;color:#9a9ca6}.notification-card__title{font-size:15px;font-weight:700;margin:0 0 4px}.notification-card__body{font-size:14px;color:#d6d8de;margin:0;line-height:1.4}.phone-frame{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:28px 16px;display:flex;flex-direction:column;gap:24px;align-items:center}.phone-frame__time{font-size:46px;font-weight:300;color:var(--color-text)}.helper-text{font-size:13px;color:var(--color-text-muted);margin:0;line-height:1.5}.gap-note{font-size:12px;color:var(--color-text-muted);background:var(--color-surface);border:1px dashed var(--color-border);border-radius:var(--radius-md);padding:10px 12px;margin:0}