/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── Variables ── */
:root {
  --primary:   #1a73e8;
  --primary-d: #1557b0;
  --accent:    #00c853;
  --danger:    #e53935;
  --warning:   #ffb300;
  --dark:      #1a1a2e;
  --sidebar:   #16213e;
  --white:     #ffffff;
  --bg:        #f4f6fb;
  --card:      #ffffff;
  --border:    #e2e8f0;
  --text:      #1e293b;
  --muted:     #64748b;
  --green:     #00c853;
  --radius:    10px;
  --shadow:    0 2px 12px rgba(0,0,0,0.08);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); font-size: 14px; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
input, textarea, select, button { font-family: inherit; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 20px; border-radius: 8px;
  font-size: 13px; font-weight: 600; cursor: pointer;
  border: none; transition: all 0.2s; white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-d); box-shadow: 0 4px 14px rgba(26,115,232,0.35); }
.btn-success { background: var(--accent); color: #fff; }
.btn-success:hover { background: #00a846; }
.btn-danger  { background: var(--danger); color: #fff; }
.btn-danger:hover  { background: #c62828; }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-lg { padding: 13px 32px; font-size: 15px; }
.btn-block { width: 100%; justify-content: center; }

/* ── Alerts ── */
.alert { padding: 12px 16px; border-radius: 8px; font-size: 13px; margin-bottom: 16px; }
.alert-danger  { background: #fdecea; color: #c62828; border: 1px solid #f5c6cb; }
.alert-success { background: #e8f5e9; color: #2e7d32; border: 1px solid #c8e6c9; }
.alert-info    { background: #e3f2fd; color: #1565c0; border: 1px solid #bbdefb; }
.alert-warning { background: #fff8e1; color: #e65100; border: 1px solid #ffe082; }

/* ══════════════════════════════════════
   LANDING PAGE
══════════════════════════════════════ */
.lp-navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 16px 6%;
  display: flex; align-items: center; justify-content: space-between;
  background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.lp-logo { font-size: 22px; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; }
.lp-logo span { color: var(--dark); }
.lp-nav-links { display: flex; align-items: center; gap: 32px; }
.lp-nav-links a { font-size: 14px; font-weight: 500; color: var(--muted); transition: color 0.2s; }
.lp-nav-links a:hover { color: var(--text); }

.lp-hero {
  min-height: 100vh;
  background: linear-gradient(135deg, #f8faff 0%, #eef2ff 100%);
  display: flex; align-items: center;
  padding: 120px 6% 80px;
}
.lp-hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; max-width: 1200px; margin: 0 auto; width: 100%; }
.lp-hero-tag { display: inline-block; background: rgba(26,115,232,0.1); color: var(--primary); padding: 5px 14px; border-radius: 50px; font-size: 12px; font-weight: 700; letter-spacing: 1px; margin-bottom: 20px; }
.lp-hero h1 { font-size: clamp(32px, 4vw, 54px); font-weight: 800; line-height: 1.1; color: var(--dark); margin-bottom: 20px; letter-spacing: -1px; }
.lp-hero h1 span { color: var(--primary); }
.lp-hero p { font-size: 16px; color: var(--muted); line-height: 1.8; margin-bottom: 36px; max-width: 480px; }
.lp-hero-btns { display: flex; gap: 12px; flex-wrap: wrap; }
.lp-hero-img { background: var(--white); border-radius: 16px; box-shadow: 0 20px 60px rgba(26,115,232,0.15); padding: 32px; min-height: 380px; display: flex; align-items: center; justify-content: center; font-size: 80px; }

.lp-stats { background: var(--primary); padding: 40px 6%; display: grid; grid-template-columns: repeat(4,1fr); text-align: center; gap: 20px; }
.lp-stat-num { font-size: 32px; font-weight: 800; color: #fff; }
.lp-stat-label { font-size: 12px; color: rgba(255,255,255,0.75); margin-top: 4px; letter-spacing: 1px; text-transform: uppercase; }

.lp-section { padding: 90px 6%; }
.lp-section-tag { display: inline-block; color: var(--primary); font-size: 12px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 12px; }
.lp-section-title { font-size: clamp(24px, 3vw, 38px); font-weight: 800; color: var(--dark); letter-spacing: -0.5px; margin-bottom: 14px; }
.lp-section-title span { color: var(--primary); }
.lp-section-sub { color: var(--muted); font-size: 15px; line-height: 1.8; max-width: 520px; }

.features-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; margin-top: 56px; }
.feature-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 32px 24px; transition: box-shadow 0.3s, transform 0.3s; }
.feature-card:hover { box-shadow: 0 8px 32px rgba(26,115,232,0.12); transform: translateY(-4px); }
.feature-icon { font-size: 36px; margin-bottom: 16px; }
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 10px; color: var(--dark); }
.feature-card p { font-size: 13px; color: var(--muted); line-height: 1.7; }

/* Pricing */
.pricing-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; margin-top: 56px; max-width: 960px; margin-left: auto; margin-right: auto; }
.pricing-card { background: var(--white); border: 1px solid var(--border); border-radius: 14px; padding: 36px 28px; text-align: center; position: relative; transition: box-shadow 0.3s; }
.pricing-card:hover { box-shadow: 0 8px 32px rgba(26,115,232,0.12); }
.pricing-card.popular { border: 2px solid var(--primary); box-shadow: 0 8px 32px rgba(26,115,232,0.15); }
.popular-badge { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); background: var(--primary); color: #fff; padding: 4px 16px; border-radius: 50px; font-size: 11px; font-weight: 700; letter-spacing: 1px; white-space: nowrap; }
.pricing-plan { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: var(--muted); margin-bottom: 16px; }
.pricing-price { font-size: 48px; font-weight: 800; color: var(--dark); line-height: 1; }
.pricing-price sup { font-size: 20px; font-weight: 700; vertical-align: top; margin-top: 8px; display: inline-block; }
.pricing-period { font-size: 13px; color: var(--muted); margin: 8px 0 24px; }
.pricing-features { text-align: left; display: flex; flex-direction: column; gap: 10px; margin-bottom: 28px; }
.pricing-features li { font-size: 13px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.pricing-features li::before { content: '✓'; color: var(--accent); font-weight: 700; flex-shrink: 0; }
.pricing-features li.off { color: var(--muted); }
.pricing-features li.off::before { content: '✕'; color: #ccc; }

/* ══════════════════════════════════════
   DASHBOARD LAYOUT
══════════════════════════════════════ */
.app-layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: 240px; flex-shrink: 0;
  background: var(--sidebar);
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; bottom: 0;
  z-index: 200; overflow-y: auto;
}
.sidebar-logo {
  padding: 22px 20px 18px;
  font-size: 20px; font-weight: 800;
  color: #fff; letter-spacing: -0.5px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.sidebar-logo span { color: var(--primary); }

.sidebar-nav { padding: 16px 10px; flex: 1; }
.nav-section-label {
  font-size: 10px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: rgba(255,255,255,0.3);
  padding: 14px 10px 6px;
}
.sidebar-nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; border-radius: 8px;
  font-size: 13px; font-weight: 500; color: rgba(255,255,255,0.65);
  transition: all 0.2s; margin-bottom: 2px;
}
.sidebar-nav a:hover { background: rgba(255,255,255,0.08); color: #fff; }
.sidebar-nav a.active { background: var(--primary); color: #fff; }
.sidebar-nav a .nav-icon { font-size: 16px; width: 20px; text-align: center; flex-shrink: 0; }

.sidebar-bottom {
  padding: 16px; border-top: 1px solid rgba(255,255,255,0.07);
}
.sidebar-user { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.user-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 14px; flex-shrink: 0;
}
.user-name { font-size: 13px; font-weight: 600; color: #fff; }
.user-plan { font-size: 11px; color: rgba(255,255,255,0.45); }

/* Main content */
.main-wrap { margin-left: 240px; flex: 1; min-height: 100vh; display: flex; flex-direction: column; }
.topbar {
  background: var(--white); border-bottom: 1px solid var(--border);
  padding: 14px 28px; display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 100;
}
.topbar-title { font-size: 18px; font-weight: 700; color: var(--dark); }
.topbar-right { display: flex; align-items: center; gap: 12px; }

.page-content { padding: 28px; flex: 1; }

/* Cards */
.card { background: var(--white); border-radius: var(--radius); border: 1px solid var(--border); padding: 24px; box-shadow: var(--shadow); }
.card-title { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 16px; }

/* Stats row */
.stats-row { display: grid; grid-template-columns: repeat(4,1fr); gap: 20px; margin-bottom: 28px; }
.stat-card { background: var(--white); border-radius: var(--radius); border: 1px solid var(--border); padding: 20px 22px; box-shadow: var(--shadow); }
.stat-card-label { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.stat-card-val { font-size: 28px; font-weight: 800; color: var(--dark); line-height: 1; }
.stat-card-sub { font-size: 12px; color: var(--muted); margin-top: 6px; }
.stat-card.blue .stat-card-val { color: var(--primary); }
.stat-card.green .stat-card-val { color: var(--accent); }
.stat-card.orange .stat-card-val { color: var(--warning); }
.stat-card.red .stat-card-val { color: var(--danger); }

/* Data table */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); padding: 10px 14px; border-bottom: 1px solid var(--border); text-align: left; }
.data-table td { padding: 12px 14px; border-bottom: 1px solid #f1f5f9; font-size: 13px; color: var(--text); }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: #f8faff; }

/* Badges */
.badge { display: inline-flex; align-items: center; padding: 3px 10px; border-radius: 50px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
.badge-paid    { background: #e8f5e9; color: #2e7d32; }
.badge-draft   { background: #f5f5f5; color: #616161; }
.badge-sent    { background: #e3f2fd; color: #1565c0; }
.badge-overdue { background: #fdecea; color: #c62828; }
.badge-accepted { background: #e8f5e9; color: #2e7d32; }
.badge-declined { background: #fdecea; color: #c62828; }
.badge-free    { background: #f5f5f5; color: #616161; }
.badge-monthly { background: #e3f2fd; color: #1565c0; }
.badge-yearly  { background: #e8f5e9; color: #2e7d32; }

/* Forms */
.form-grid { display: grid; gap: 16px; }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: 12px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 10px 12px; border: 1.5px solid var(--border);
  border-radius: 8px; font-size: 13px; color: var(--text);
  background: var(--white); outline: none; transition: border-color 0.2s;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--primary); }
.form-group textarea { min-height: 90px; resize: vertical; }

/* Invoice items table */
.items-table { width: 100%; border-collapse: collapse; margin-bottom: 16px; }
.items-table th { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--muted); padding: 8px 10px; border-bottom: 2px solid var(--border); text-align: left; background: #f8faff; }
.items-table td { padding: 8px 6px; border-bottom: 1px solid #f1f5f9; vertical-align: middle; }
.items-table input { width: 100%; padding: 7px 9px; border: 1.5px solid var(--border); border-radius: 6px; font-size: 13px; }
.items-table input:focus { border-color: var(--primary); outline: none; }
.items-table .col-desc  { width: 36%; }
.items-table .col-qty   { width: 10%; }
.items-table .col-unit  { width: 14%; }
.items-table .col-rate  { width: 15%; }
.items-table .col-amt   { width: 15%; }
.items-table .col-del   { width: 6%; text-align: center; }

/* Totals box */
.totals-box { background: #f8faff; border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 24px; max-width: 360px; margin-left: auto; }
.totals-row { display: flex; justify-content: space-between; align-items: center; padding: 6px 0; font-size: 13px; color: var(--muted); }
.totals-row.grand { border-top: 2px solid var(--border); margin-top: 8px; padding-top: 12px; font-size: 16px; font-weight: 800; color: var(--dark); }

/* Upgrade banner */
.upgrade-banner {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-d) 100%);
  border-radius: var(--radius); padding: 20px 24px;
  display: flex; align-items: center; justify-content: space-between;
  color: #fff; margin-bottom: 24px; gap: 16px;
}
.upgrade-banner h4 { font-size: 15px; font-weight: 700; margin-bottom: 4px; }
.upgrade-banner p  { font-size: 13px; opacity: 0.85; }
.btn-white { background: #fff; color: var(--primary); font-weight: 700; }
.btn-white:hover { background: #eef2ff; }

/* Plan badge */
.plan-badge { display: inline-flex; padding: 3px 10px; border-radius: 50px; font-size: 11px; font-weight: 700; }
.plan-badge.free    { background: #f5f5f5; color: #616161; }
.plan-badge.monthly { background: #e3f2fd; color: #1565c0; }
.plan-badge.yearly  { background: #e8f5e9; color: #2e7d32; }

/* ── Auth pages ── */
.auth-page { min-height: 100vh; background: linear-gradient(135deg, #f8faff, #eef2ff); display: flex; align-items: center; justify-content: center; padding: 24px; }
.auth-card { background: var(--white); border-radius: 16px; padding: 40px; width: 100%; max-width: 420px; box-shadow: 0 8px 40px rgba(26,115,232,0.1); }
.auth-logo { font-size: 26px; font-weight: 800; color: var(--primary); text-align: center; margin-bottom: 4px; }
.auth-logo span { color: var(--dark); }
.auth-sub  { text-align: center; color: var(--muted); font-size: 13px; margin-bottom: 28px; }
.auth-divider { display: flex; align-items: center; gap: 12px; margin: 20px 0; color: var(--muted); font-size: 12px; }
.auth-divider::before, .auth-divider::after { content:''; flex:1; height:1px; background:var(--border); }
.auth-footer { text-align: center; font-size: 13px; color: var(--muted); margin-top: 20px; }
.auth-footer a { color: var(--primary); font-weight: 600; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .stats-row { grid-template-columns: repeat(2,1fr); }
  .features-grid { grid-template-columns: repeat(2,1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; }
  .lp-hero-inner { grid-template-columns: 1fr; }
  .lp-hero-img { display: none; }
  .lp-stats { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); transition: transform 0.3s; }
  .sidebar.open { transform: translateX(0); }
  .main-wrap { margin-left: 0; }
  .stats-row { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .form-row-2 { grid-template-columns: 1fr; }
  .form-row-3 { grid-template-columns: 1fr; }
  .upgrade-banner { flex-direction: column; text-align: center; }
}