@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=Inter:wght@300;400;500&display=swap');

/* ─── Tokens ──────────────────────────────────────────────── */
:root {
  --bg:           #0c0d0f;
  --bg-surface:   #141518;
  --bg-card:      #1a1c21;
  --bg-hover:     #21242b;
  --border:       rgba(255,255,255,0.07);
  --border-mid:   rgba(255,255,255,0.12);
  --text-primary: #f0f0ee;
  --text-secondary: rgba(240,240,238,0.55);
  --text-dim:     rgba(240,240,238,0.3);
  --accent:       #00d4a0;
  --accent-dim:   rgba(0,212,160,0.15);
  --accent-glow:  rgba(0,212,160,0.35);
  --danger:       #ff5252;
  --warn:         #ffb347;
  --radius-sm:    6px;
  --radius-md:    12px;
  --radius-lg:    20px;
  --radius-xl:    32px;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;
  --shadow-card:  0 2px 24px rgba(0,0,0,0.5);
  --transition:   0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; background: var(--bg); color: var(--text-primary); font-family: var(--font-body); font-size: 16px; line-height: 1.5; -webkit-font-smoothing: antialiased; overflow-x: hidden; }

/* ─── Screen system ───────────────────────────────────────── */
.screen { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; overflow-y: auto; }
.screen.active { opacity: 1; pointer-events: all; }

/* ─── Logo ────────────────────────────────────────────────── */
.logo-mark { position: relative; width: 52px; height: 52px; }
.logo-mark.sm { width: 32px; height: 32px; }
.logo-mark.xs { width: 24px; height: 24px; }
.logo-ring { position: absolute; inset: 0; border-radius: 50%; border: 2px solid var(--accent); animation: spin-slow 8s linear infinite; opacity: 0.5; }
.logo-core { position: absolute; inset: 27%; border-radius: 50%; background: var(--accent); }
.logo-mark.sm .logo-core { inset: 27%; }
@keyframes spin-slow { from { transform: rotate(0deg) scale(1); } 50% { transform: rotate(180deg) scale(1.08); } to { transform: rotate(360deg) scale(1); } }

/* ─── Wordmark ────────────────────────────────────────────── */
.wordmark { font-family: var(--font-display); font-size: 2.25rem; font-weight: 700; letter-spacing: -0.04em; line-height: 1; }
.wordmark.sm { font-size: 1.25rem; }
.wordmark.xs { font-size: 1rem; }

/* ─── Buttons ─────────────────────────────────────────────── */
.btn-primary { width: 100%; padding: 15px 24px; background: var(--accent); border: none; border-radius: var(--radius-md); color: #0c0d0f; font-family: var(--font-display); font-weight: 600; font-size: 1rem; cursor: pointer; transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition); display: flex; align-items: center; justify-content: center; gap: 8px; letter-spacing: -0.01em; }
.btn-primary:hover:not(:disabled) { box-shadow: 0 0 20px var(--accent-glow); transform: translateY(-1px); }
.btn-primary:active:not(:disabled) { transform: translateY(0); }
.btn-primary:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary.small { padding: 10px 20px; font-size: 0.9rem; }
.btn-primary.sm { padding: 8px 18px; font-size: 0.85rem; width: auto; }

.btn-ghost { background: transparent; border: 1.5px solid var(--border-mid); border-radius: var(--radius-md); color: var(--text-secondary); font-family: var(--font-display); font-weight: 500; font-size: 0.9rem; padding: 12px 24px; cursor: pointer; transition: border-color var(--transition), color var(--transition); }
.btn-ghost:hover { border-color: var(--text-secondary); color: var(--text-primary); }
.btn-ghost.sm { padding: 7px 14px; font-size: 0.8rem; }
.btn-ghost.danger:hover { border-color: var(--danger); color: var(--danger); }

.link-btn { background: none; border: none; color: var(--accent); font-family: var(--font-body); font-size: 0.88rem; cursor: pointer; padding: 4px 0; text-decoration: none; }
.link-btn:hover { text-decoration: underline; }
.back-btn { align-self: flex-start; margin-bottom: 8px; }

.btn-spinner { width: 16px; height: 16px; border: 2px solid rgba(12,13,15,0.3); border-top-color: #0c0d0f; border-radius: 50%; animation: spin 0.7s linear infinite; display: none; flex-shrink: 0; }
.btn-primary.loading .btn-label { display: none; }
.btn-primary.loading .btn-spinner { display: block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Forms ───────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; width: 100%; }
.form-label { font-size: 0.82rem; font-weight: 500; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.form-hint { font-weight: 400; color: var(--text-dim); }
.form-input { width: 100%; background: var(--bg-card); border: 1.5px solid var(--border-mid); border-radius: var(--radius-md); color: var(--text-primary); font-family: var(--font-body); font-size: 1rem; padding: 13px 16px; outline: none; transition: border-color var(--transition), box-shadow var(--transition); }
.form-input::placeholder { color: var(--text-dim); }
.form-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.form-error { color: var(--danger); font-size: 0.85rem; padding: 10px 14px; background: rgba(255,82,82,0.1); border-radius: var(--radius-sm); border: 1px solid rgba(255,82,82,0.2); }

/* ─── Textarea ────────────────────────────────────────────── */
.task-input { width: 100%; background: var(--bg-card); border: 1.5px solid var(--border-mid); border-radius: var(--radius-md); color: var(--text-primary); font-family: var(--font-body); font-size: 1rem; line-height: 1.55; padding: 14px 16px; resize: none; outline: none; transition: border-color var(--transition), box-shadow var(--transition); }
.task-input::placeholder { color: var(--text-dim); }
.task-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.task-input.small { font-size: 0.9rem; padding: 10px 14px; }

/* ─── LANDING ─────────────────────────────────────────────── */
.landing-inner { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 20px; width: 100%; max-width: 520px; padding: 40px 24px; }
.tagline { font-family: var(--font-display); font-size: 1.05rem; font-weight: 400; color: var(--text-secondary); letter-spacing: -0.01em; line-height: 1.6; }
.landing-ctas { display: flex; flex-direction: column; gap: 10px; width: 100%; }
.domain-pills { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.pill { font-size: 0.75rem; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-dim); padding: 4px 10px; border: 1px solid var(--border); border-radius: 100px; }

/* ─── AUTH ────────────────────────────────────────────────── */
.auth-inner { display: flex; flex-direction: column; align-items: stretch; gap: 16px; width: 100%; max-width: 400px; padding: 40px 24px; }
.auth-logo { display: flex; align-items: center; gap: 8px; justify-content: center; margin-bottom: 4px; }
.auth-title { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; letter-spacing: -0.03em; text-align: center; }
.auth-sub { font-size: 0.88rem; color: var(--text-secondary); text-align: center; margin-top: -4px; }
.auth-switch { font-size: 0.85rem; color: var(--text-secondary); text-align: center; }

/* ─── APP HOME ────────────────────────────────────────────── */
.app-inner { display: flex; flex-direction: column; width: 100%; min-height: 100%; }
.app-header { display: flex; align-items: center; gap: 8px; padding: 14px 20px; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.app-header-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.plan-badge { font-size: 0.7rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; padding: 3px 8px; border-radius: 100px; border: 1px solid; }
.plan-badge.free { color: var(--text-dim); border-color: var(--border); }
.plan-badge.plus { color: var(--accent); border-color: var(--accent); }
.plan-badge.pro  { color: #a78bfa; border-color: #a78bfa; }

.app-body { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 40px 24px; gap: 20px; max-width: 540px; margin: 0 auto; width: 100%; }
.app-prompt { font-family: var(--font-display); font-size: 1.3rem; font-weight: 600; letter-spacing: -0.02em; color: var(--text-primary); align-self: flex-start; }
.input-area { width: 100%; display: flex; flex-direction: column; gap: 10px; }

.clarification-box { width: 100%; background: var(--bg-card); border: 1.5px solid var(--border-mid); border-radius: var(--radius-md); padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.clarification-q { font-family: var(--font-display); font-size: 0.95rem; font-weight: 500; color: var(--text-primary); line-height: 1.5; }

.sessions-bar { font-size: 0.8rem; color: var(--text-dim); align-self: flex-start; }

/* ─── LOADING ─────────────────────────────────────────────── */
.loading-inner { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.pulse-ring { width: 60px; height: 60px; border-radius: 50%; border: 2px solid var(--accent); animation: pulse-expand 1.4s ease-out infinite; }
@keyframes pulse-expand { 0% { transform: scale(0.5); opacity: 1; } 100% { transform: scale(1.8); opacity: 0; } }
.loading-label { font-family: var(--font-display); font-size: 0.9rem; color: var(--text-secondary); letter-spacing: 0.02em; }

/* ─── EXECUTION ───────────────────────────────────────────── */
#screen-execution { flex-direction: column; align-items: stretch; justify-content: flex-start; padding: 0; }
.exec-header { display: flex; align-items: center; justify-content: space-between; padding: 16px 24px; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.task-badge { display: flex; align-items: center; gap: 8px; background: var(--bg-card); border: 1px solid var(--border); border-radius: 100px; padding: 6px 14px; max-width: calc(100% - 100px); }
.domain-icon { font-size: 0.85rem; flex-shrink: 0; }
.task-label { font-family: var(--font-display); font-size: 0.8rem; font-weight: 500; color: var(--text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.btn-exit { background: transparent; border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-dim); font-size: 0.75rem; padding: 6px 12px; cursor: pointer; transition: color var(--transition), border-color var(--transition); flex-shrink: 0; }
.btn-exit:hover { color: var(--danger); border-color: var(--danger); }

.exec-main { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 40px 24px; gap: 48px; }

.action-card { width: 100%; max-width: 540px; background: var(--bg-card); border: 1px solid var(--border-mid); border-radius: var(--radius-xl); padding: 40px 36px 36px; box-shadow: var(--shadow-card); display: flex; flex-direction: column; align-items: center; gap: 28px; }
.action-level-bar { width: 100%; height: 3px; background: var(--border); border-radius: 100px; overflow: hidden; }
.level-fill { height: 100%; background: var(--accent); border-radius: 100px; transition: width 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94); width: 16.6%; }
.action-text { font-family: var(--font-display); font-size: clamp(1.2rem, 3.5vw, 1.6rem); font-weight: 500; line-height: 1.45; color: var(--text-primary); text-align: center; letter-spacing: -0.02em; min-height: 80px; display: flex; align-items: center; transition: opacity 0.25s ease; }
.action-text.fading { opacity: 0; }

.timer-wrap { position: relative; width: 80px; height: 80px; }
.timer-ring { width: 80px; height: 80px; transform: rotate(-90deg); }
.timer-track { fill: none; stroke: var(--border); stroke-width: 3; }
.timer-arc { fill: none; stroke: var(--accent); stroke-width: 3; stroke-linecap: round; stroke-dasharray: 213.6; stroke-dashoffset: 0; transition: stroke var(--transition); }
.timer-arc.warn { stroke: var(--warn); }
.timer-label { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; font-family: var(--font-display); font-size: 1rem; font-weight: 600; letter-spacing: -0.03em; }

.done-section { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.btn-done { background: var(--accent); border: none; border-radius: var(--radius-xl); color: #0c0d0f; font-family: var(--font-display); font-size: 1.1rem; font-weight: 700; letter-spacing: -0.02em; padding: 18px 64px; cursor: pointer; transition: box-shadow var(--transition), transform var(--transition); }
.btn-done:hover { box-shadow: 0 0 32px var(--accent-glow); transform: translateY(-2px); }
.btn-done:active { transform: translateY(0); }
.done-hint { font-size: 0.8rem; color: var(--text-dim); }

.feedback-panel { position: fixed; bottom: 0; left: 0; right: 0; background: var(--bg-surface); border-top: 1px solid var(--border-mid); padding: 24px; display: flex; flex-direction: column; align-items: center; gap: 16px; z-index: 10; transform: translateY(100%); transition: transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94); }
.feedback-panel.visible { transform: translateY(0); }
.feedback-prompt { font-family: var(--font-display); font-size: 0.9rem; font-weight: 500; color: var(--text-secondary); }
.feedback-buttons { display: flex; gap: 10px; width: 100%; max-width: 420px; }
.btn-feedback { flex: 1; background: var(--bg-card); border: 1.5px solid var(--border); border-radius: var(--radius-md); color: var(--text-secondary); font-family: var(--font-body); font-size: 0.8rem; font-weight: 500; padding: 14px 8px; cursor: pointer; display: flex; flex-direction: column; align-items: center; gap: 5px; transition: border-color var(--transition), color var(--transition), background var(--transition); }
.btn-feedback:hover { border-color: var(--text-secondary); color: var(--text-primary); background: var(--bg-hover); }
.btn-feedback.highlight { border-color: var(--accent); color: var(--accent); }
.btn-feedback.highlight:hover { background: var(--accent-dim); }
.fb-icon { font-size: 1.1rem; }
.fb-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; }

/* ─── DONE ────────────────────────────────────────────────── */
.done-inner { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 20px; padding: 40px 24px; max-width: 360px; }
.done-graphic { width: 80px; height: 80px; }
.done-circle { width: 80px; height: 80px; }
.done-title { font-family: var(--font-display); font-size: 2rem; font-weight: 700; letter-spacing: -0.04em; }
.done-sub { font-size: 0.95rem; color: var(--text-secondary); margin-top: -8px; }
.done-actions { display: flex; flex-direction: column; gap: 10px; width: 100%; margin-top: 8px; }

/* ─── UPGRADE / PRICING ───────────────────────────────────── */
.upgrade-inner { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 24px; width: 100%; max-width: 720px; padding: 40px 24px; }
.upgrade-eyebrow { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.1em; color: var(--accent); }
.upgrade-title { font-family: var(--font-display); font-size: clamp(1.6rem, 4vw, 2.2rem); font-weight: 700; letter-spacing: -0.04em; }
.upgrade-sub { font-size: 0.95rem; color: var(--text-secondary); max-width: 460px; line-height: 1.6; margin-top: -8px; }

.plan-cards { display: flex; gap: 16px; width: 100%; flex-wrap: wrap; justify-content: center; }
.plan-cards.three-col .plan-card { flex: 1; min-width: 200px; }

.plan-card { background: var(--bg-card); border: 1.5px solid var(--border-mid); border-radius: var(--radius-lg); padding: 24px; display: flex; flex-direction: column; gap: 16px; position: relative; flex: 1; min-width: 220px; text-align: left; }
.plan-card.featured { border-color: var(--accent); box-shadow: 0 0 32px var(--accent-dim); }
.plan-card-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #0c0d0f; font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; padding: 3px 12px; border-radius: 100px; white-space: nowrap; }
.plan-card-header { display: flex; align-items: baseline; justify-content: space-between; }
.plan-name { font-family: var(--font-display); font-size: 1rem; font-weight: 600; }
.plan-price { display: flex; align-items: baseline; gap: 2px; }
.price-amount { font-family: var(--font-display); font-size: 1.8rem; font-weight: 700; letter-spacing: -0.04em; }
.price-period { font-size: 0.8rem; color: var(--text-dim); }
.plan-features { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.plan-features li { font-size: 0.85rem; color: var(--text-secondary); }
.plan-features li.dim { color: var(--text-dim); }
.plan-btn { margin-top: auto; }

/* ─── ACCOUNT ─────────────────────────────────────────────── */
.account-row { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; border-bottom: 1px solid var(--border); }
.account-label { font-size: 0.85rem; color: var(--text-secondary); }
.account-value { font-size: 0.9rem; font-weight: 500; }
.account-actions { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }

/* ─── ERROR ───────────────────────────────────────────────── */
.error-inner { display: flex; flex-direction: column; align-items: center; gap: 16px; padding: 40px 24px; text-align: center; }
.error-icon { font-size: 2.5rem; }
.error-msg { font-family: var(--font-display); font-size: 1rem; color: var(--text-secondary); max-width: 320px; }

/* ─── Utilities ───────────────────────────────────────────── */
.hidden { display: none !important; }

@media (prefers-reduced-motion: reduce) {
  .logo-ring, .pulse-ring, .btn-spinner { animation: none; }
  * { transition-duration: 0.01ms !important; }
}

@media (max-width: 480px) {
  .action-card { padding: 28px 20px 24px; border-radius: var(--radius-lg); }
  .action-text { font-size: 1.15rem; }
  .exec-main { padding: 24px 16px; gap: 32px; }
  .btn-done { padding: 16px 48px; }
  .plan-cards { flex-direction: column; }
  .upgrade-inner { padding: 30px 16px; }
}