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

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(255,255,255,0.04);
  --bg-card-hover: rgba(255,255,255,0.07);
  --border-subtle: rgba(255,255,255,0.08);
  --border-active: rgba(245,158,11,0.4);
  --text-primary: #f1f1f6;
  --text-secondary: #9898ad;
  --text-muted: #5c5c72;
  --accent: #f59e0b;
  --accent-light: #fbbf24;
  --accent-glow: rgba(245,158,11,0.2);
  --accent-gradient: linear-gradient(135deg, #f59e0b, #ef4444);
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #3b82f6;
  --glass-bg: rgba(255,255,255,0.03);
  --glass-border: rgba(255,255,255,0.06);
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.4);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --font-sans: 'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-mono: 'JetBrains Mono','Fira Code',monospace;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s cubic-bezier(0.25,0.46,0.45,0.94);
  --header-height: 64px;
}

[data-theme="light"]{
  --bg-primary:#f7f5f0;--bg-secondary:#eeeae3;--bg-card:rgba(255,255,255,0.7);--bg-card-hover:rgba(255,255,255,0.9);
  --border-subtle:rgba(0,0,0,0.08);--border-active:rgba(245,158,11,0.3);
  --text-primary:#1a1a2e;--text-secondary:#52526e;--text-muted:#8888a0;
  --glass-bg:rgba(255,255,255,0.6);--glass-border:rgba(0,0,0,0.06);--glass-shadow:0 8px 32px rgba(0,0,0,0.08);
  --accent-glow:rgba(245,158,11,0.1);
}

/* ===== Global ===== */
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 24px)}
body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;overflow-x:hidden;min-height:100vh;-webkit-font-smoothing:antialiased}
.container{max-width:1200px;margin:0 auto;padding:0 24px}

/* ===== Ambient ===== */
.ambient-bg{position:fixed;inset:0;pointer-events:none;z-index:0;overflow:hidden}
.ambient-orb{position:absolute;border-radius:50%;filter:blur(100px);opacity:0.12;animation:orbFloat 20s ease-in-out infinite}
[data-theme="light"] .ambient-orb{opacity:0.06}
.ambient-orb-1{width:600px;height:600px;background:#f59e0b;top:-200px;right:-100px}
.ambient-orb-2{width:500px;height:500px;background:#ef4444;bottom:-150px;left:-100px;animation-delay:-7s}
.ambient-orb-3{width:400px;height:400px;background:#eab308;top:50%;left:50%;animation-delay:-14s}
@keyframes orbFloat{0%,100%{transform:translate(0,0) scale(1)}25%{transform:translate(30px,-40px) scale(1.05)}50%{transform:translate(-20px,20px) scale(0.95)}75%{transform:translate(15px,30px) scale(1.02)}}

/* ===== Glass Card ===== */
.glass-card{background:var(--glass-bg);border:1px solid var(--glass-border);border-radius:var(--radius-lg);box-shadow:var(--glass-shadow);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);transition:background var(--transition-normal),border-color var(--transition-normal)}
.glass-card:hover{background:var(--bg-card-hover);border-color:var(--border-active)}

/* ===== Header ===== */
.site-header{position:fixed;top:0;left:0;right:0;height:var(--header-height);z-index:100;background:rgba(10,10,15,0.7);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-subtle);transition:background var(--transition-normal)}

@media (max-width: 768px) {
  .site-header {
    height: calc(var(--header-height) + 50px) !important;
    padding-top: max(env(safe-area-inset-top, 0px), 50px) !important;
  }
  .hero {
    padding-top: calc(var(--header-height) + 62px) !important;
  }
  .tool-switcher-bar {
    top: calc(var(--header-height) + 54px) !important;
  }
}
[data-theme="light"] .site-header{background:rgba(247,245,240,0.8)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text-primary)}
.logo-icon{display:flex;align-items:center;justify-content:center}
.logo-text{font-size:1.25rem;font-weight:700;letter-spacing:-0.5px}
.logo-accent{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.header-nav{display:flex;gap:4px}
.nav-link{padding:8px 16px;color:var(--text-secondary);text-decoration:none;font-size:0.875rem;font-weight:500;border-radius:var(--radius-sm);transition:all var(--transition-fast)}
.nav-link:hover{color:var(--text-primary);background:var(--bg-card)}
.nav-link.active{color:var(--accent-light);background:var(--accent-glow)}
.theme-toggle{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);background:var(--bg-card);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast)}
.theme-toggle:hover{color:var(--accent-light);border-color:var(--border-active)}
.icon-moon{display:block}.icon-sun{display:none}
[data-theme="light"] .icon-moon{display:none}[data-theme="light"] .icon-sun{display:block}

/* ===== Hero ===== */
.hero{padding-top:calc(var(--header-height) + 12px);padding-bottom:8px;text-align:center;position:relative;z-index:1}
.hero-pre{display:block;font-size:0.75rem;font-weight:600;text-transform:uppercase;letter-spacing:2px;background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:4px}
.hero-title, .section-title, h1, h2 {font-size:1.35rem !important;font-weight:700 !important;letter-spacing:-0.5px;line-height:1.25;margin-bottom:4px}
.hero-subtitle, .section-subtitle {font-size:0.85rem !important;font-weight:400;color:var(--text-secondary);margin-bottom:0;line-height:1.35;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:90%;margin:0 auto}

/* ===== Tool Switcher Bar ===== */
.tool-switcher-bar{display:grid;grid-template-columns:repeat(3,1fr);gap:4px;width:100%;max-width:600px;margin:16px auto 0;padding:4px;background:var(--bg-glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-subtle);border-radius:var(--radius-full);box-shadow:0 4px 16px rgba(0,0,0,0.05);position:sticky;top:calc(var(--header-height) + 4px);z-index:99;box-sizing:border-box}
.switcher-pill{width:100%;padding:8px 6px;border:none;border-radius:var(--radius-full);background:transparent;color:var(--text-secondary);font-family:var(--font-sans);font-size:0.8rem;font-weight:600;cursor:pointer;white-space:nowrap;transition:all var(--transition-fast);text-align:center;overflow:hidden;text-overflow:ellipsis}
.switcher-pill:hover{color:var(--text-primary);background:rgba(255,255,255,0.05)}
.switcher-pill.active{background:var(--accent-gradient);color:#fff;box-shadow:0 4px 14px var(--accent-glow)}

/* ===== Section ===== */
.tool-section{padding:24px 0 32px;position:relative;z-index:1}
.section-badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border:1px solid var(--border-subtle);border-radius:var(--radius-full);font-size:0.7rem;font-weight:600;color:var(--accent-light);margin-bottom:8px;background:var(--accent-glow)}
.section-badge span{font-family:var(--font-mono);color:var(--accent)}
.section-header{text-align:center;margin-bottom:12px}

/* ===== Calculator Grid ===== */
.calc-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:24px;align-items:start}

.calc-inputs{padding:28px;display:flex;flex-direction:column;gap:24px;position:sticky;top:calc(var(--header-height) + 24px)}

/* Mode Toggle */
.mode-toggle{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.mode-btn{padding:14px 16px;border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:transparent;color:var(--text-secondary);cursor:pointer;text-align:left;transition:all var(--transition-fast);font-family:var(--font-sans)}
.mode-btn.active{border-color:var(--accent);background:var(--accent-glow);color:var(--text-primary)}
.mode-label{display:block;font-size:0.88rem;font-weight:600}
.mode-desc{display:block;font-size:0.72rem;color:var(--text-muted);margin-top:2px}
.mode-btn.active .mode-desc{color:var(--accent-light)}

/* Form Groups */
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group label{font-size:0.78rem;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.5px}
.input-wrap{display:flex;align-items:center;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}
.input-wrap:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.input-wrap.currency .prefix{padding:10px 0 10px 14px;color:var(--text-muted);font-weight:500;font-size:0.9rem}
.input-wrap input{flex:1;padding:10px 14px 10px 6px;background:none;border:none;color:var(--text-primary);font-family:var(--font-mono);font-size:1rem;font-weight:500;outline:none}
.input-wrap.compact{margin-top:8px}
.input-wrap.compact input{padding:8px 12px 8px 6px;font-size:0.9rem}

/* Rate Pills */
.rate-pills{display:flex;flex-wrap:wrap;gap:6px;margin-top:4px}
.rate-pill{padding:8px 16px;border:1px solid var(--border-subtle);border-radius:var(--radius-full);background:transparent;color:var(--text-secondary);font-size:0.82rem;font-weight:600;cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-mono)}
.rate-pill:hover{border-color:var(--accent);color:var(--text-primary)}
.rate-pill.active{background:var(--accent-gradient);color:#fff;border-color:transparent;box-shadow:0 4px 16px var(--accent-glow)}
.custom-rate-pill{font-family:var(--font-sans)}
.custom-rate-row{display:flex;align-items:center;gap:6px;margin-top:8px}
.custom-rate-row.hidden{display:none}
.custom-rate-input{width:100px;padding:8px 12px;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-mono);font-size:0.9rem;outline:none}
.custom-rate-input:focus{border-color:var(--accent)}
.unit{font-size:0.85rem;color:var(--text-muted);font-weight:500}

/* Type Pills */
.type-pills{display:flex;gap:6px;margin-top:4px}
.type-pill{flex:1;padding:10px 14px;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);font-size:0.78rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-sans);text-align:center}
.type-pill.active{border-color:var(--accent);background:var(--accent-glow);color:var(--text-primary)}

/* Calc Button */
.calc-btn,.generate-btn{display:flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border:none;border-radius:var(--radius-full);background:var(--accent-gradient);color:#fff;font-size:0.95rem;font-weight:600;cursor:pointer;transition:all var(--transition-normal);font-family:var(--font-sans);box-shadow:0 4px 20px var(--accent-glow);width:100%}
.calc-btn:hover,.generate-btn:hover{transform:translateY(-1px);box-shadow:0 8px 30px var(--accent-glow)}

/* ===== Results ===== */
.calc-results{display:flex;flex-direction:column;gap:16px}

.result-hero{text-align:center;padding:32px 24px;background:var(--accent-gradient);border:none;position:relative;overflow:hidden}
.result-hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle,rgba(255,255,255,0.1) 0%,transparent 60%);animation:shimmer 8s ease-in-out infinite}
@keyframes shimmer{0%,100%{transform:translate(-10%,-10%) rotate(0deg)}50%{transform:translate(10%,10%) rotate(5deg)}}
.result-hero-label{font-size:0.82rem;font-weight:500;color:rgba(255,255,255,0.8);text-transform:uppercase;letter-spacing:2px;position:relative}
.result-hero-value{font-size:clamp(2rem,4vw,2.8rem);font-weight:800;color:#fff;font-family:var(--font-mono);letter-spacing:-1px;position:relative;text-shadow:0 2px 20px rgba(0,0,0,0.2);margin:8px 0 4px}
.result-hero-sub{font-size:0.82rem;color:rgba(255,255,255,0.7);position:relative}

.result-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.result-card{padding:16px;display:flex;align-items:center;gap:12px}
.result-card-icon{width:40px;height:40px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.gst-icon{background:rgba(245,158,11,0.15);color:var(--warning)}
.cgst-icon{background:rgba(59,130,246,0.15);color:var(--info)}
.sgst-icon{background:rgba(139,92,246,0.15);color:#8b5cf6}
.result-card-info{display:flex;flex-direction:column;gap:2px;min-width:0}
.result-card-label{font-size:0.72rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.5px;font-weight:500}
.result-card-value{font-size:0.95rem;font-weight:700;font-family:var(--font-mono)}

/* Stacked Bar */
.breakdown-visual{padding:24px}
.breakdown-visual h3{font-size:0.92rem;font-weight:600;margin-bottom:16px}
.stacked-bar{display:flex;height:40px;border-radius:var(--radius-sm);overflow:hidden;margin-bottom:12px}
.bar-segment{display:flex;align-items:center;justify-content:center;font-size:0.72rem;font-weight:600;color:#fff;transition:width var(--transition-slow);min-width:30px}
.base-segment{background:linear-gradient(90deg,#10b981,#34d399)}
.gst-segment{background:linear-gradient(90deg,#f59e0b,#fbbf24)}
.bar-labels{display:flex;gap:20px}
.bar-label{display:flex;align-items:center;gap:6px;font-size:0.78rem;color:var(--text-secondary)}
.dot{width:8px;height:8px;border-radius:50%}
.dot-base{background:#10b981}
.dot-gst{background:#f59e0b}
.bar-label strong{color:var(--text-primary);font-family:var(--font-mono)}

/* ===== Tracker ===== */
.tracker-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:24px;align-items:start}
.tracker-inputs{padding:28px;display:flex;flex-direction:column;gap:20px;position:sticky;top:calc(var(--header-height) + 24px)}
.panel-title{font-size:1.05rem;font-weight:700}

.income-source{padding:16px;border:1px solid var(--border-subtle);border-radius:var(--radius-md);transition:border-color var(--transition-fast)}
.income-source:hover{border-color:var(--border-active)}
.source-header{display:flex;align-items:center;gap:10px;margin-bottom:4px}
.source-icon{width:36px;height:36px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.yt-icon{background:rgba(239,68,68,0.12)}
.brand-icon{background:rgba(245,158,11,0.12)}
.aff-icon{background:rgba(99,102,241,0.12)}
.free-icon{background:rgba(6,182,212,0.12)}
.other-icon{background:rgba(113,113,122,0.12)}
.source-info{display:flex;flex-direction:column;gap:2px;flex:1}
.source-name{font-size:0.88rem;font-weight:600}
.source-tag{display:inline-block;padding:2px 8px;border-radius:var(--radius-full);font-size:0.65rem;font-weight:600;text-transform:uppercase;letter-spacing:0.3px;width:fit-content}
.tag-green{background:rgba(16,185,129,0.15);color:#34d399}
.tag-amber{background:rgba(245,158,11,0.15);color:#fbbf24}
.tag-blue{background:rgba(59,130,246,0.15);color:#60a5fa}
.tag-gray{background:rgba(113,113,122,0.15);color:#a1a1aa}
.source-note{font-size:0.75rem;color:var(--text-muted);line-height:1.5;margin-top:8px}
.source-note strong{color:var(--text-secondary)}

.tracker-state-toggle label{font-size:0.78rem;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.5px;margin-bottom:6px;display:block}
.state-pills{display:flex;gap:6px}
.state-pill{flex:1;padding:10px;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);background:transparent;color:var(--text-secondary);font-size:0.8rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-sans);text-align:center}
.state-pill.active{border-color:var(--accent);background:var(--accent-glow);color:var(--text-primary)}

/* Threshold Card */
.tracker-results{display:flex;flex-direction:column;gap:20px}
.threshold-card{padding:28px}
.threshold-status{text-align:center;margin-bottom:24px}
.status-icon{width:60px;height:60px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 12px}
.status-icon.safe{background:rgba(16,185,129,0.15);color:var(--success)}
.status-icon.warn{background:rgba(245,158,11,0.15);color:var(--warning)}
.status-icon.danger{background:rgba(239,68,68,0.15);color:var(--danger)}
.threshold-status h3{font-size:1.1rem;font-weight:700;margin-bottom:4px}
.threshold-status p{font-size:0.88rem;color:var(--text-secondary)}

.threshold-meter{margin-bottom:24px}
.meter-labels{display:flex;justify-content:space-between;font-size:0.72rem;color:var(--text-muted);margin-bottom:6px;font-family:var(--font-mono)}
.meter-bar{position:relative;height:10px;background:var(--border-subtle);border-radius:5px;overflow:visible}
.meter-fill{height:100%;border-radius:5px;transition:width var(--transition-slow),background var(--transition-slow)}
.meter-fill.safe{background:linear-gradient(90deg,#10b981,#34d399)}
.meter-fill.warn{background:linear-gradient(90deg,#f59e0b,#fbbf24)}
.meter-fill.danger{background:linear-gradient(90deg,#ef4444,#f87171)}
.meter-marker{position:absolute;top:-6px;transform:translateX(-50%);transition:left var(--transition-slow)}
.marker-label{display:block;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:4px;padding:2px 8px;font-size:0.7rem;font-family:var(--font-mono);font-weight:600;white-space:nowrap;position:relative;top:-18px}
.meter-info{margin-top:8px;font-size:0.82rem;color:var(--text-secondary);text-align:center}

.income-breakdown h4{font-size:0.85rem;font-weight:600;margin-bottom:12px}
.breakdown-rows{display:flex;flex-direction:column;gap:8px}
.breakdown-row{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:var(--bg-card);border-radius:var(--radius-sm);font-size:0.82rem}
.breakdown-row .bk-name{display:flex;align-items:center;gap:8px}
.breakdown-row .bk-name .bk-emoji{font-size:1rem}
.breakdown-row .bk-amount{font-family:var(--font-mono);font-weight:600}
.breakdown-row .bk-tag{font-size:0.65rem;padding:2px 6px;border-radius:var(--radius-full);margin-left:8px}

/* Checklist */
.checklist-card{padding:24px}
.checklist-title{display:flex;align-items:center;gap:8px;font-size:0.95rem;font-weight:600;margin-bottom:16px}
.checklist-title svg{color:var(--accent-light)}
.checklist-items{display:flex;flex-direction:column;gap:8px}
.checklist-empty{color:var(--text-muted);font-size:0.85rem;text-align:center;padding:20px}
.check-item{display:flex;align-items:flex-start;gap:10px;padding:10px 12px;background:var(--bg-card);border-radius:var(--radius-sm);font-size:0.82rem;line-height:1.5;color:var(--text-secondary)}
.check-icon{width:20px;height:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px;font-size:0.72rem}
.check-icon.green{background:rgba(16,185,129,0.15);color:#10b981}
.check-icon.amber{background:rgba(245,158,11,0.15);color:#f59e0b}
.check-icon.red{background:rgba(239,68,68,0.15);color:#ef4444}
.check-icon.blue{background:rgba(59,130,246,0.15);color:#3b82f6}

/* ===== Invoice ===== */
.invoice-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.invoice-form{padding:28px;display:flex;flex-direction:column;gap:24px}
.form-fieldset{border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:20px;display:flex;flex-direction:column;gap:14px}
.form-fieldset legend{font-size:0.82rem;font-weight:600;color:var(--accent-light);padding:0 8px;text-transform:uppercase;letter-spacing:0.5px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-row.three-col{grid-template-columns:1fr 1fr 1fr}

.form-fieldset input,.form-fieldset textarea{padding:10px 14px;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-primary);font-family:var(--font-sans);font-size:0.88rem;outline:none;transition:border-color var(--transition-fast);width:100%;resize:vertical}
.form-fieldset input:focus,.form-fieldset textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.form-fieldset input::placeholder,.form-fieldset textarea::placeholder{color:var(--text-muted)}
.form-fieldset .form-group label{font-size:0.75rem;font-weight:500;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.3px;margin-bottom:4px;display:block}

/* Items Table */
.items-table{width:100%}
.items-header{display:grid;grid-template-columns:2fr 1fr 0.6fr 1fr 0.8fr 1fr 40px;gap:8px;padding:8px 0;font-size:0.68rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.3px;border-bottom:1px solid var(--border-subtle)}
.item-row{display:grid;grid-template-columns:2fr 1fr 0.6fr 1fr 0.8fr 1fr 40px;gap:8px;padding:10px 0;align-items:center;border-bottom:1px solid var(--border-subtle)}
.item-field-label{display:none}
.item-row input{padding:8px 10px;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:6px;color:var(--text-primary);font-family:var(--font-mono);font-size:0.82rem;outline:none;width:100%}
.item-row input:focus{border-color:var(--accent)}
.item-row .item-total{font-family:var(--font-mono);font-size:0.85rem;font-weight:600;color:var(--accent-light)}
.remove-item-btn{width:28px;height:28px;border:none;border-radius:6px;background:transparent;color:var(--text-muted);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}
.remove-item-btn:hover{background:rgba(239,68,68,0.1);color:var(--danger)}

.add-item-btn{display:flex;align-items:center;justify-content:center;gap:6px;padding:10px;border:1px dashed var(--border-subtle);border-radius:var(--radius-sm);background:transparent;color:var(--text-muted);font-size:0.82rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-sans);width:100%;margin-top:8px}
.add-item-btn:hover{border-color:var(--accent);color:var(--accent-light)}

/* Invoice Preview */
.invoice-preview-wrap{position:sticky;top:calc(var(--header-height) + 24px)}
.preview-actions{display:flex;justify-content:flex-end;gap:8px;margin-bottom:12px}
.preview-btn{display:flex;align-items:center;gap:6px;padding:8px 16px;border:1px solid var(--border-subtle);border-radius:var(--radius-full);background:var(--bg-card);color:var(--text-secondary);font-size:0.82rem;font-weight:500;cursor:pointer;transition:all var(--transition-fast);font-family:var(--font-sans)}
.preview-btn:hover{color:var(--accent-light);border-color:var(--accent)}

.invoice-preview{background:#fff;border-radius:var(--radius-lg);box-shadow:0 8px 40px rgba(0,0,0,0.3);padding:40px;color:#1a1a2e;min-height:600px;font-size:0.88rem}
.inv-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;height:400px;color:#999;text-align:center}
.inv-empty p{max-width:280px;font-size:0.85rem}

/* Invoice print styles */
.inv-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:24px;padding-bottom:16px;border-bottom:2px solid #f59e0b}
.inv-brand h2{font-size:1.3rem;font-weight:800;color:#1a1a2e}
.inv-brand p{font-size:0.78rem;color:#666;margin-top:2px}
.inv-title{text-align:right}
.inv-title h1{font-size:1.8rem;font-weight:800;color:#f59e0b;letter-spacing:-1px}
.inv-title .inv-meta-line{font-size:0.78rem;color:#666;margin-top:2px}

.inv-parties{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-bottom:24px}
.inv-party h4{font-size:0.7rem;font-weight:600;text-transform:uppercase;letter-spacing:0.5px;color:#f59e0b;margin-bottom:6px}
.inv-party p{font-size:0.82rem;color:#333;line-height:1.5}
.inv-party .party-name{font-weight:700;font-size:0.88rem}
.inv-party .party-gstin{font-family:var(--font-mono);font-size:0.75rem;color:#888;margin-top:4px}

.inv-items-table{width:100%;border-collapse:collapse;margin-bottom:24px}
.inv-items-table th{padding:10px 12px;background:#fef3c7;font-size:0.7rem;font-weight:600;text-transform:uppercase;letter-spacing:0.3px;color:#92400e;text-align:left;border-bottom:1px solid #fde68a}
.inv-items-table td{padding:10px 12px;border-bottom:1px solid #f3f4f6;font-size:0.82rem;color:#333}
.inv-items-table .num{text-align:right;font-family:var(--font-mono);font-weight:500}

.inv-totals{display:flex;justify-content:flex-end;margin-bottom:24px}
.inv-totals-table{width:280px}
.inv-totals-row{display:flex;justify-content:space-between;padding:6px 0;font-size:0.82rem;color:#555}
.inv-totals-row.grand{border-top:2px solid #f59e0b;padding-top:10px;margin-top:4px;font-size:1rem;font-weight:800;color:#1a1a2e}
.inv-totals-row .tot-label{font-weight:500}
.inv-totals-row .tot-value{font-family:var(--font-mono);font-weight:600}

.inv-amount-words{font-size:0.78rem;color:#666;font-style:italic;margin-bottom:24px;padding:10px;background:#fef9e7;border-radius:6px}

.inv-footer-section{border-top:1px solid #e5e7eb;padding-top:16px;display:grid;grid-template-columns:1fr 1fr;gap:16px}
.inv-footer-section h4{font-size:0.7rem;font-weight:600;text-transform:uppercase;letter-spacing:0.3px;color:#f59e0b;margin-bottom:4px}
.inv-footer-section p{font-size:0.75rem;color:#666;line-height:1.5;white-space:pre-line}

/* ===== Footer ===== */
.site-footer{padding:40px 0;border-top:1px solid var(--border-subtle);position:relative;z-index:1}
.footer-inner{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.footer-desc{font-size:0.82rem;color:var(--text-muted);margin-top:4px}
.footer-links{display:flex;gap:20px}
.footer-links a{color:var(--text-secondary);text-decoration:none;font-size:0.85rem;transition:color var(--transition-fast)}
.footer-links a:hover{color:var(--accent-light)}
.footer-copy p{font-size:0.78rem;color:var(--text-muted)}

/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.calc-inputs,.tracker-inputs,.invoice-form{animation:fadeInUp 0.5s ease}
.calc-results,.tracker-results,.invoice-preview-wrap{animation:fadeInUp 0.6s ease 0.1s both}

/* ===== Print ===== */
@media print{
  body{background:#fff !important}
  .site-header,.hero,.section-badge,.section-header,.ambient-bg,.site-footer,.theme-toggle,.calc-inputs,.tracker-inputs,.invoice-form,.preview-actions,.header-nav,.tool-section:not(#invoice){display:none !important}
  .invoice-preview-wrap{position:static !important}
  .invoice-preview{box-shadow:none !important;padding:20px !important;border-radius:0 !important}
  .invoice-grid{display:block !important}
}

/* ===== Responsive ===== */
@media(max-width:900px){
  .calc-grid,.tracker-grid,.invoice-grid{grid-template-columns:1fr}
  .calc-inputs,.tracker-inputs{position:static}
  .invoice-preview-wrap{position:static}
  .result-cards{grid-template-columns:1fr}
  .items-header,.item-row{grid-template-columns:2fr 1fr 0.5fr 1fr 0.7fr 1fr 30px;font-size:0.72rem}
}
@media(max-width:768px){
  p.hero-subtitle{display:none !important}
  .tool-switcher-bar{display:none !important}
}
@media(max-width:600px){
  .container{padding:0 16px}
  p.hero-subtitle{display:none !important}
  .header-nav{display:none}
  .tool-switcher-bar{display:none !important}
  .switcher-pill{width:100%;padding:8px 4px;font-size:0.72rem;font-weight:600;text-align:center;border-radius:var(--radius-full)}
  .calc-grid,.tracker-grid,.invoice-grid{display:flex;flex-direction:column;width:100%;max-width:100%;min-width:0;box-sizing:border-box}
  .calc-inputs,.tracker-inputs,.invoice-form,.calc-results,.tracker-results,.invoice-preview-wrap{width:100%;max-width:100%;min-width:0;padding:16px;box-sizing:border-box}
  .mode-toggle{grid-template-columns:1fr}
  .form-row,.form-row.three-col{grid-template-columns:1fr}
  .rate-pills{display:flex;flex-wrap:wrap;gap:4px;width:100%}
  .rate-pill{flex:1 1 auto;padding:6px 10px;font-size:0.75rem;text-align:center}
  .type-pills{display:flex;flex-direction:column;gap:6px;width:100%}
  .type-pill{width:100%;text-align:center}
  .items-header{display:none}
  .item-row{display:grid;grid-template-columns:1fr 1fr 1fr;grid-template-areas:"desc desc desc" "hsn hsn hsn" "qty rate gst" "tot tot action";gap:10px;padding:12px;border:1px solid var(--border-subtle);border-radius:var(--radius-md);background:var(--bg-card);margin-bottom:10px}
  .field-desc{grid-area:desc}
  .field-hsn{grid-area:hsn}
  .field-qty{grid-area:qty}
  .field-rate{grid-area:rate}
  .field-gst{grid-area:gst}
  .field-total{grid-area:tot;display:flex;flex-direction:column;justify-content:center}
  .remove-item-btn{grid-area:action;justify-self:end;align-self:center}
  .item-field-label{display:block !important;font-size:0.7rem;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:0.4px;margin-bottom:4px}
  .inv-header{flex-direction:column;gap:12px}
  .inv-title{text-align:left}
  .inv-parties{grid-template-columns:1fr}
  .footer-inner{flex-direction:column;text-align:center}
}

.header-right-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mobile-menu-btn:hover {
  color: var(--accent-light);
  background: var(--bg-card-hover);
  border-color: var(--border-active);
}

/* Mobile Navigation Dropdown Drawer */
.mobile-nav-dropdown {
  display: none;
  position: absolute;
  top: calc(var(--header-height) + 4px);
  right: 16px;
  left: 16px;
  background: #12121a !important;
  background-color: #12121a !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  opacity: 1 !important;
  border: 1px solid var(--border-active);
  border-radius: var(--radius-md);
  padding: 8px;
  flex-direction: column;
  gap: 4px;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.7);
  z-index: 99999;
}

[data-theme="light"] .mobile-nav-dropdown {
  background: #ffffff !important;
  background-color: #ffffff !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  opacity: 1 !important;
  border: 1px solid #cbd5e1 !important;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.22) !important;
}

.mobile-nav-dropdown.active {
  display: flex;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--text-primary);
  background: var(--accent-glow);
}

[data-theme="light"] .mobile-nav-link {
  color: #334155;
  background: transparent;
}

[data-theme="light"] .mobile-nav-link:hover,
[data-theme="light"] .mobile-nav-link.active {
  color: #0f172a !important;
  background: #f1f5f9 !important;
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex !important;
  }
}

/* Scrollbar */
::-webkit-scrollbar{width:6px;height:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--border-subtle);border-radius:3px}
::selection{background:var(--accent-glow);color:var(--text-primary)}