/*
  PUC Setu — Professional Design System v4.0
  Black · Blue · White Premium Theme
  Google Fonts: Inter — loaded in header.php
*/

/* ══════════════════════════════════════
   DESIGN TOKENS
══════════════════════════════════════ */
:root {
    /* Brand Colors — Black, Blue, White */
    --primary:    #0A0F1E;
    --primary-2:  #111827;
    --primary-3:  #1E3A5F;
    --blue:       #1A56DB;
    --blue-2:     #2563EB;
    --blue-3:     #3B82F6;
    --blue-light: #EFF6FF;
    --accent:     #1A56DB;
    --gold:       #F59E0B;

    /* Semantic */
    --danger:     #DC2626;
    --success:    #16A34A;
    --warning:    #D97706;
    --info:       #0891B2;

    /* Neutral */
    --white:      #FFFFFF;
    --gray-50:    #F8FAFC;
    --gray-100:   #F1F5F9;
    --gray-200:   #E2E8F0;
    --gray-300:   #CBD5E1;
    --gray-400:   #94A3B8;
    --gray-500:   #64748B;
    --gray-600:   #475569;
    --gray-700:   #334155;
    --gray-800:   #1E293B;
    --gray-900:   #0F172A;

    /* Semantic Aliases */
    --heading:    var(--primary);
    --text:       var(--gray-700);
    --muted:      var(--gray-500);
    --line:       var(--gray-200);
    --bg:         var(--gray-50);
    --surface:    var(--white);

    /* Sizing */
    --header-h:   72px;
    --sb-width:   260px;
    --radius-sm:  8px;
    --radius:     12px;
    --radius-lg:  18px;
    --radius-xl:  24px;

    /* Shadows */
    --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow:     0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
    --shadow-md:  0 10px 25px rgba(0,0,0,0.10), 0 4px 6px rgba(0,0,0,0.06);
    --shadow-lg:  0 20px 40px rgba(0,0,0,0.12), 0 8px 16px rgba(0,0,0,0.07);

    /* Transitions */
    --ease:       cubic-bezier(0.4,0,0.2,1);
}

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

html { scroll-behavior:smooth; -webkit-text-size-adjust:100%; }

body {
    font-family:'Inter',ui-sans-serif,system-ui,sans-serif;
    font-size:15px; line-height:1.6; color:var(--text);
    background:var(--bg); -webkit-font-smoothing:antialiased;
}

img { display:block; max-width:100%; height:auto; }
a { color:var(--blue); text-decoration:none; transition:color 0.18s; }
a:hover { color:var(--primary); }

h1,h2,h3,h4,h5,h6 {
    color:var(--heading); font-weight:800; line-height:1.18;
    letter-spacing:-0.03em;
}
h1 { font-size:clamp(28px,3.5vw,48px); }
h2 { font-size:clamp(22px,2.8vw,36px); }
h3 { font-size:clamp(18px,2vw,24px); }
h4 { font-size:17px; }
p  { margin-bottom:0; line-height:1.70; }

ul { list-style:none; }
input,select,textarea,button { font-family:inherit; font-size:inherit; }
button { cursor:pointer; border:0; background:none; }

/* ══════════════════════════════════════
   LAYOUT
══════════════════════════════════════ */
.container {
    width:min(100% - 32px, 1240px);
    margin-inline:auto;
}

/* Dashboard layout — works with sidebar.php's .puc-sidebar */
.dashboard-layout {
    display:grid;
    grid-template-columns:var(--sb-width) minmax(0,1fr);
    min-height:calc(100vh - var(--header-h));
    align-items:stretch;
}

/* sidebar visual handled by sidebar.php */
.puc-sidebar, .sidebar { flex-shrink:0; }

.content {
    padding:24px 28px;
    min-width:0; max-width:100%;
    background:var(--gray-50);
}

/* ══════════════════════════════════════
   TYPOGRAPHY UTILITIES
══════════════════════════════════════ */
.text-muted { color:var(--muted); }
.text-sm    { font-size:13px; }
.text-xs    { font-size:12px; }
.font-bold  { font-weight:700; }
.font-black { font-weight:900; }

/* ══════════════════════════════════════
   BUTTONS
══════════════════════════════════════ */
.btn {
    display:inline-flex; align-items:center; justify-content:center; gap:6px;
    min-height:40px; padding:0 18px; border-radius:var(--radius);
    font-weight:700; font-size:14px; cursor:pointer; border:1.5px solid transparent;
    text-decoration:none !important; transition:all 0.18s var(--ease);
    white-space:nowrap; letter-spacing:-0.01em;
}
.btn:hover { text-decoration:none !important; }
.btn svg { width:15px; height:15px; stroke:currentColor; stroke-width:2.2; fill:none; flex-shrink:0; stroke-linecap:round; stroke-linejoin:round; }

.btn-primary {
    background:var(--blue); color:#fff !important;
    border-color:var(--blue); box-shadow:0 4px 14px rgba(26,86,219,0.30);
}
.btn-primary:hover { background:#1347B8; border-color:#1347B8; transform:translateY(-1px); box-shadow:0 8px 22px rgba(26,86,219,0.38); }

.btn-accent {
    background:var(--blue-2); color:#fff !important;
    border-color:var(--blue-2); box-shadow:0 4px 14px rgba(37,99,235,0.28);
}
.btn-accent:hover { background:#1D4FD8; border-color:#1D4FD8; transform:translateY(-1px); }

.btn-dark {
    background:var(--primary); color:#fff !important; border-color:var(--primary);
}
.btn-dark:hover { background:var(--primary-3); border-color:var(--primary-3); transform:translateY(-1px); }

.btn-light {
    background:var(--white); color:var(--gray-700) !important;
    border-color:var(--gray-200); box-shadow:var(--shadow-sm);
}
.btn-light:hover { background:var(--gray-50); border-color:var(--gray-300); transform:translateY(-1px); box-shadow:var(--shadow); }

.btn-outline {
    background:transparent; color:var(--blue) !important;
    border-color:var(--blue);
}
.btn-outline:hover { background:var(--blue-light); }

.btn-danger {
    background:#FEF2F2; color:#B91C1C !important; border-color:#FECACA;
}
.btn-danger:hover { background:#FEE2E2; border-color:#FCA5A5; }

.btn-warning {
    background:#FFFBEB; color:#92400E !important; border-color:#FDE68A;
}
.btn-warning:hover { background:#FEF3C7; }

.btn-success {
    background:#F0FDF4; color:#15803D !important; border-color:#BBF7D0;
}
.btn-success:hover { background:#DCFCE7; }

.btn-sm { min-height:32px; padding:0 13px; font-size:13px; border-radius:var(--radius-sm); gap:5px; }
.btn-lg { min-height:50px; padding:0 26px; font-size:16px; border-radius:var(--radius-lg); }

/* ══════════════════════════════════════
   FORMS
══════════════════════════════════════ */
.form-group { display:grid; gap:6px; }
.form-group label {
    font-size:13px; font-weight:700; color:var(--gray-700);
    letter-spacing:0.01em;
}

input[type="text"], input[type="email"], input[type="password"],
input[type="tel"], input[type="number"], input[type="date"],
input[type="search"], select, textarea {
    width:100%; min-height:42px; padding:0 13px;
    border:1.5px solid var(--gray-200); border-radius:var(--radius);
    background:var(--white); color:var(--gray-800); font-size:14px;
    outline:none; transition:all 0.18s var(--ease);
    box-shadow:0 1px 2px rgba(0,0,0,0.04);
}
input:focus, select:focus, textarea:focus {
    border-color:var(--blue); background:var(--white);
    box-shadow:0 0 0 3px rgba(26,86,219,0.12), 0 1px 2px rgba(0,0,0,0.04);
}
input::placeholder, textarea::placeholder { color:var(--gray-400); font-weight:500; }
select { padding-right:36px; background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2.5' stroke-linecap='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E"); background-repeat:no-repeat; background-position:right 12px center; appearance:none; cursor:pointer; }
textarea { padding:11px 13px; min-height:100px; resize:vertical; }

.form-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.form-row  { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px; }
.form-actions { display:flex; gap:10px; flex-wrap:wrap; align-items:center; padding-top:4px; }

.input-wrap { position:relative; }
.input-icon {
    position:absolute; left:13px; top:50%; transform:translateY(-50%);
    color:var(--gray-400); pointer-events:none;
    width:16px; height:16px;
}
.input-icon svg { width:16px; height:16px; stroke:currentColor; stroke-width:2; fill:none; stroke-linecap:round; stroke-linejoin:round; }
.input-wrap input { padding-left:40px; }
.input-wrap:focus-within .input-icon { color:var(--blue); }

/* ══════════════════════════════════════
   BADGES & STATUS
══════════════════════════════════════ */
.badge {
    display:inline-flex; align-items:center; gap:5px;
    padding:3px 9px; border-radius:999px;
    font-size:12px; font-weight:700;
}
.badge-success  { background:#F0FDF4; color:#15803D; border:1px solid #BBF7D0; }
.badge-warning  { background:#FFFBEB; color:#92400E; border:1px solid #FDE68A; }
.badge-danger   { background:#FEF2F2; color:#B91C1C; border:1px solid #FECACA; }
.badge-info     { background:#F0F9FF; color:#0369A1; border:1px solid #BAE6FD; }
.badge-default  { background:var(--gray-100); color:var(--gray-600); border:1px solid var(--gray-200); }
.badge-blue     { background:var(--blue-light); color:var(--blue); border:1px solid #BFDBFE; }

/* ══════════════════════════════════════
   FLASH MESSAGES
══════════════════════════════════════ */
.flash {
    display:flex; align-items:flex-start; gap:12px;
    padding:13px 16px; border-radius:var(--radius);
    font-weight:600; font-size:14px; margin-bottom:16px;
    border:1px solid transparent;
}
.flash-success { background:#F0FDF4; color:#15803D; border-color:#BBF7D0; }
.flash-danger  { background:#FEF2F2; color:#B91C1C; border-color:#FECACA; }
.flash-warning { background:#FFFBEB; color:#92400E; border-color:#FDE68A; }
.flash-info    { background:#F0F9FF; color:#0369A1; border-color:#BAE6FD; }

/* ══════════════════════════════════════
   TABLES
══════════════════════════════════════ */
.table-wrap { overflow-x:auto; border-radius:var(--radius-lg); border:1px solid var(--gray-200); background:var(--white); }
table { width:100%; border-collapse:collapse; font-size:14px; }
thead tr { background:var(--gray-50); border-bottom:2px solid var(--gray-200); }
th {
    padding:12px 16px; text-align:left;
    color:var(--gray-500); font-weight:700; font-size:12px;
    letter-spacing:0.05em; text-transform:uppercase; white-space:nowrap;
}
td { padding:13px 16px; border-bottom:1px solid var(--gray-100); vertical-align:middle; color:var(--gray-700); }
tbody tr:last-child td { border-bottom:0; }
tbody tr:hover td { background:var(--gray-50); }
.table-wrap table { min-width:540px; }

/* ══════════════════════════════════════
   CARDS & PANELS
══════════════════════════════════════ */
.card, .panel {
    background:var(--white); border:1px solid var(--gray-200);
    border-radius:var(--radius-xl); padding:20px;
    box-shadow:var(--shadow-sm); transition:box-shadow 0.2s var(--ease);
}
.card:hover { box-shadow:var(--shadow-md); }
.panel-head {
    display:flex; align-items:flex-start; justify-content:space-between;
    gap:12px; margin-bottom:16px;
}
.panel-head h2, .panel-head h3 { font-size:16px; font-weight:800; color:var(--gray-900); letter-spacing:-0.03em; margin:0; }
.panel-head p { font-size:13px; color:var(--muted); margin:3px 0 0; }

/* ══════════════════════════════════════
   PAGE HEADER
══════════════════════════════════════ */
.page-head {
    display:flex; align-items:center; justify-content:space-between;
    gap:14px; margin-bottom:22px; flex-wrap:wrap;
}
.page-head h1 { font-size:22px; letter-spacing:-0.04em; font-weight:900; }
.page-kicker {
    font-size:11.5px; font-weight:700; color:var(--blue);
    letter-spacing:0.07em; text-transform:uppercase; margin-bottom:4px;
}
.page-head-sub { font-size:14px; color:var(--muted); margin-top:3px; font-weight:500; }

/* ══════════════════════════════════════
   EMPTY STATES
══════════════════════════════════════ */
.empty-state {
    text-align:center; padding:40px 20px;
    background:var(--white); border:1px dashed var(--gray-300);
    border-radius:var(--radius-xl); color:var(--muted);
}
.empty-state-icon {
    width:52px; height:52px; margin:0 auto 14px;
    background:var(--blue-light); border-radius:var(--radius-lg);
    display:grid; place-items:center; font-size:22px;
}
.empty-state strong { display:block; color:var(--gray-700); font-size:16px; margin-bottom:6px; }

/* ══════════════════════════════════════
   STAT CARDS
══════════════════════════════════════ */
.stats-grid { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:14px; }
.stat-card {
    background:var(--white); border:1px solid var(--gray-200);
    border-radius:var(--radius-xl); padding:18px;
    box-shadow:var(--shadow-sm); position:relative; overflow:hidden;
    transition:all 0.2s var(--ease);
}
.stat-card::before {
    content:""; position:absolute; inset:0 0 auto 0; height:3px;
    background:linear-gradient(90deg,var(--blue),var(--blue-3));
}
.stat-card:hover { transform:translateY(-2px); box-shadow:var(--shadow-md); }
.stat-card-icon {
    width:40px; height:40px; border-radius:var(--radius);
    display:grid; place-items:center; margin-bottom:12px;
    background:var(--blue-light); color:var(--blue);
}
.stat-card-icon svg { width:20px; height:20px; stroke:currentColor; stroke-width:2; fill:none; stroke-linecap:round; stroke-linejoin:round; }
.stat-card span  { display:block; color:var(--muted); font-size:12px; font-weight:700; letter-spacing:0.02em; text-transform:uppercase; }
.stat-card strong{ display:block; color:var(--gray-900); font-size:30px; font-weight:900; letter-spacing:-0.05em; margin:4px 0 3px; line-height:1; }
.stat-card small { color:var(--gray-400); font-size:12px; font-weight:600; }

/* ══════════════════════════════════════
   AUTH PAGES
══════════════════════════════════════ */
.auth-wrap {
    min-height:calc(100vh - var(--header-h));
    display:flex; align-items:center; justify-content:center;
    padding:40px 16px;
    background:linear-gradient(135deg,#0A0F1E 0%,#111827 48%,#1E3A5F 100%);
}
.auth-card {
    width:100%; max-width:480px;
    background:var(--white); border-radius:var(--radius-xl); padding:36px;
    box-shadow:var(--shadow-lg); border:1px solid var(--gray-200);
}
.auth-card-head { margin-bottom:28px; text-align:center; }
.auth-card-head h1 { font-size:26px; font-weight:900; color:var(--gray-900); }
.auth-card-head p  { color:var(--muted); font-size:14px; margin-top:6px; }

/* ══════════════════════════════════════
   FILTERS
══════════════════════════════════════ */
.filters {
    display:flex; gap:10px; flex-wrap:wrap; align-items:center;
    padding:14px 16px; background:var(--white);
    border:1px solid var(--gray-200); border-radius:var(--radius-lg);
    margin-bottom:16px; box-shadow:var(--shadow-sm);
}
.filters .filter-search { flex:1; min-width:160px; }
.filters input, .filters select { min-height:38px; }

/* ══════════════════════════════════════
   PROFILE / FORM PAGES
══════════════════════════════════════ */
.profile-grid { display:grid; grid-template-columns:320px minmax(0,1fr); gap:18px; align-items:start; }
.profile-form-card { background:var(--white); border:1px solid var(--gray-200); border-radius:var(--radius-xl); padding:24px; box-shadow:var(--shadow-sm); }
.profile-sidebar-card { background:linear-gradient(135deg,var(--primary) 0%,var(--primary-3) 100%); border-radius:var(--radius-xl); padding:28px; text-align:center; color:#fff; }

/* ══════════════════════════════════════
   REPORTS
══════════════════════════════════════ */
.report-stat-grid { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:14px; margin-bottom:18px; }
.report-stat { background:var(--white); border:1px solid var(--gray-200); border-radius:var(--radius-xl); padding:18px; box-shadow:var(--shadow-sm); text-align:center; }
.report-stat > strong { display:block; font-size:28px; color:var(--gray-900); font-weight:900; letter-spacing:-0.04em; margin-bottom:5px; }
.report-stat > span   { color:var(--muted); font-size:13px; font-weight:600; }

/* ══════════════════════════════════════
   CHARTS
══════════════════════════════════════ */
.chart-row { display:grid; grid-template-columns:90px minmax(0,1fr) 44px; align-items:center; gap:12px; }
.chart-row span   { color:var(--muted); font-size:13px; font-weight:600; }
.chart-row strong { color:var(--gray-800); font-weight:800; text-align:right; letter-spacing:-0.02em; }
.chart-track { height:11px; border-radius:999px; background:var(--gray-100); overflow:hidden; }
.chart-fill  { height:100%; border-radius:999px; background:linear-gradient(90deg,var(--blue),var(--blue-3)); transition:width 0.9s var(--ease); }
.chart-bars  { display:grid; gap:10px; }

/* ══════════════════════════════════════
   USAGE BARS
══════════════════════════════════════ */
.usage-item { padding:14px 16px; background:var(--gray-50); border:1px solid var(--gray-200); border-radius:var(--radius-lg); }
.usage-top  { display:flex; justify-content:space-between; gap:8px; font-size:13px; font-weight:700; color:var(--gray-700); margin-bottom:9px; }
.usage-top span:last-child { color:var(--muted); font-weight:600; }
.usage-track { height:8px; border-radius:999px; background:var(--gray-200); overflow:hidden; }
.usage-fill  { height:100%; border-radius:999px; background:linear-gradient(90deg,var(--blue),var(--blue-3)); transition:width 0.8s var(--ease); }

/* ══════════════════════════════════════
   QUICK ACTIONS
══════════════════════════════════════ */
.quick-action-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:10px; }
.quick-action-card {
    display:flex; align-items:center; gap:12px;
    padding:14px; border-radius:var(--radius-lg);
    background:var(--white); border:1px solid var(--gray-200);
    text-decoration:none !important; color:var(--gray-700) !important;
    transition:all 0.2s var(--ease); min-height:76px;
    box-shadow:var(--shadow-sm);
}
.quick-action-card:hover { border-color:var(--blue-3); background:var(--blue-light); transform:translateY(-2px); box-shadow:var(--shadow-md); }
.quick-action-icon {
    width:40px; height:40px; border-radius:var(--radius);
    display:grid; place-items:center; flex-shrink:0;
    background:var(--blue); color:#fff;
}
.quick-action-icon svg { width:19px; height:19px; stroke:currentColor; stroke-width:2; fill:none; stroke-linecap:round; stroke-linejoin:round; }
.quick-action-card strong { display:block; color:var(--gray-900); font-size:14px; font-weight:700; }
.quick-action-card span   { display:block; color:var(--muted); font-size:12px; margin-top:2px; }

/* ══════════════════════════════════════
   MESSAGE LOGS
══════════════════════════════════════ */
.logs-summary-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:14px; margin-bottom:18px; }
.logs-summary-card { background:var(--white); border:1px solid var(--gray-200); border-radius:var(--radius-xl); padding:18px; box-shadow:var(--shadow-sm); }
.logs-summary-info strong { display:block; font-size:26px; font-weight:900; letter-spacing:-0.04em; color:var(--gray-900); }
.logs-summary-info span   { color:var(--muted); font-size:13px; font-weight:600; }

/* ══════════════════════════════════════
   REVEAL ANIMATIONS
══════════════════════════════════════ */
.reveal { opacity:0; transform:translateY(16px); transition:opacity 0.5s var(--ease), transform 0.5s var(--ease); }
.reveal.in-view { opacity:1; transform:translateY(0); }

/* ══════════════════════════════════════
   HERO (Landing)
══════════════════════════════════════ */
.hero {
    padding:72px 0 64px;
    background:linear-gradient(135deg,var(--primary) 0%,var(--primary-2) 50%,var(--primary-3) 100%);
    position:relative; overflow:hidden;
}
.hero::before {
    content:""; position:absolute; inset:0; pointer-events:none;
    background:radial-gradient(circle at 80% 20%,rgba(26,86,219,0.25),transparent 40%),
               radial-gradient(circle at 10% 80%,rgba(59,130,246,0.18),transparent 36%);
}
.hero-grid { display:grid; grid-template-columns:1fr 480px; gap:56px; align-items:center; position:relative; z-index:1; }

/* Price Cards */
.price-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:18px; }
.price-card { background:var(--white); border:1px solid var(--gray-200); border-radius:var(--radius-xl); padding:28px; box-shadow:var(--shadow-sm); }
.price-card.featured { border-color:var(--blue); box-shadow:0 0 0 1px var(--blue),var(--shadow-md); transform:translateY(-4px); }
.price-card h3 { font-size:20px; font-weight:900; margin-bottom:8px; }

/* ══════════════════════════════════════
   NAV TOGGLE (mobile)
══════════════════════════════════════ */
.nav-toggle {
    display:none; width:40px; height:40px;
    border-radius:var(--radius-sm); border:1.5px solid var(--gray-200);
    background:var(--white); color:var(--gray-600);
    align-items:center; justify-content:center; cursor:pointer;
}
.nav-toggle svg { width:20px; height:20px; }

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width:1100px) {
    .stats-grid, .report-stat-grid { grid-template-columns:repeat(2,minmax(0,1fr)); }
}
@media (max-width:980px) {
    .container { width:min(100% - 24px,1200px); }
    .dashboard-layout { grid-template-columns:1fr; }
    .form-grid { grid-template-columns:1fr; }
    .profile-grid { grid-template-columns:1fr; }
    .price-grid { grid-template-columns:1fr; }
    .hero-grid { grid-template-columns:1fr; gap:32px; }
    .page-head { flex-direction:column; align-items:flex-start; }
    .content { padding:16px; }
    .nav-toggle { display:inline-flex; }
    .main-nav { display:none; }
    .main-nav.open, .main-nav.is-open { display:flex; position:absolute; top:calc(var(--header-h) + 8px); left:12px; right:12px; flex-direction:column; background:#fff; border:1px solid var(--gray-200); border-radius:var(--radius-lg); padding:10px; box-shadow:var(--shadow-lg); z-index:200; }
}
@media (max-width:700px) {
    .stats-grid, .report-stat-grid, .quick-action-grid, .logs-summary-grid { grid-template-columns:1fr; }
    .form-row { grid-template-columns:1fr; }
    .filters { flex-direction:column; align-items:stretch; }
    .table-wrap table { min-width:480px; }
    .chart-row { grid-template-columns:70px 1fr 36px; }
    .auth-card { padding:24px 20px; }
}