/* ============================================
   AI ToolCor Calculator - Complete CSS
   ============================================ */

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

/* ===== VARIABLES ===== */
:root {
    --bg-base: #E8E2D5;
    --bg-soft: #F0EBE0;
    --frame-bg: #DDD6C7;
    --card-glass: rgba(255, 255, 255, 0.55);
    --card-glass-strong: rgba(255, 255, 255, 0.75);
    --card-solid: #FFFFFF;
    --border-soft: rgba(255, 255, 255, 0.6);
    --border-line: rgba(0, 0, 0, 0.06);
    
    --pink: #FFD6E0; --pink-deep: #FFB8CC;
    --purple: #E0D4FF; --purple-deep: #C7B3FF;
    --blue: #D4E4FF; --blue-deep: #B3CCFF;
    --green: #D4F4DD; --green-deep: #A8E6B8;
    --peach: #FFE0CC; --peach-deep: #FFC9A3;
    --yellow: #FFF4CC; --yellow-deep: #FFE699;
    --red: #FFD4D4; --red-deep: #FF9999;
    
    --ink: #1F1F1F;
    --ink-soft: #3A3A3A;
    --gray-700: #525252;
    --gray-500: #737373;
    --gray-400: #A3A3A3;
    
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.04);
    --shadow-soft: 0 2px 10px rgba(0, 0, 0, 0.03);
    --shadow-hover: 0 12px 30px rgba(0, 0, 0, 0.08);
    
    --r-lg: 24px;
    --r-md: 16px;
    --r-sm: 12px;
    --r-pill: 999px;
    
    --holo: linear-gradient(135deg, #FFD6E0 0%, #FFE0CC 20%, #FFF4CC 40%, #D4F4DD 60%, #D4E4FF 80%, #E0D4FF 100%);
}

/* ===== BASE ===== */
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-base);
    color: var(--ink);
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; font-family: inherit; background: none; }
input, select, textarea { font-family: inherit; }

/* ===== BACKGROUND ===== */
.bg-wrapper {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(circle at 20% 20%, rgba(255,214,224,0.4), transparent 50%),
        radial-gradient(circle at 80% 30%, rgba(212,244,221,0.4), transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(224,212,255,0.3), transparent 50%),
        var(--bg-base);
}

.bg-grain {
    position: absolute;
    inset: 0;
    opacity: 0.3;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
}

/* ============================================
   APP FRAME
   ============================================ */
.app-frame {
    width: 100%;
    min-height: 100vh;
    padding: 16px;
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 16px;
}

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    background: var(--card-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--r-lg);
    padding: 24px 18px;
    border: 1px solid var(--border-soft);
    display: flex;
    flex-direction: column;
    gap: 20px;
    position: sticky;
    top: 16px;
    height: calc(100vh - 32px);
    overflow-y: auto;
    align-self: start;
    z-index: 10;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.1); border-radius: 4px; }

/* Brand */
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--ink);
    padding: 0 8px;
}

.brand-icon {
    width: 32px;
    height: 32px;
    background: var(--holo);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    flex-shrink: 0;
}

.brand-circle {
    width: 12px;
    height: 12px;
    background: var(--ink);
    border-radius: 50%;
}

.brand-text sup {
    font-size: 10px;
    color: var(--gray-500);
    font-weight: 500;
    margin-left: 2px;
}

/* Sidebar Section */
.sidebar-section { display: flex; }

.nav-btn {
    background: var(--card-solid);
    padding: 10px 22px;
    border-radius: var(--r-pill);
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    box-shadow: var(--shadow-soft);
    transition: all 0.2s;
}

.nav-btn:hover { background: var(--card-glass-strong); }
.nav-btn.active { background: var(--ink); color: white; }

/* Sidebar Nav */
.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-radius: var(--r-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    transition: all 0.2s;
    background: rgba(255,255,255,0.4);
    border: 1px solid transparent;
}

.nav-item:hover {
    background: var(--card-glass-strong);
    border-color: var(--border-soft);
    color: var(--ink);
}

.nav-item.active {
    background: var(--card-solid);
    color: var(--ink);
    box-shadow: var(--shadow-soft);
    border-color: var(--border-soft);
}

.nav-item > i:first-child {
    width: 18px;
    text-align: center;
    font-size: 14px;
    flex-shrink: 0;
}

.nav-item > span:first-of-type {
    flex: 1;
}

.nav-count {
    background: rgba(0,0,0,0.06);
    color: var(--gray-500);
    font-size: 11px;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--r-pill);
}

.arrow {
    font-size: 10px !important;
    color: var(--gray-400);
    width: auto !important;
    flex-shrink: 0;
}

/* Sidebar Bottom */
.sidebar-bottom { margin-top: auto; }

.upgrade-card {
    background: var(--holo);
    border-radius: var(--r-md);
    padding: 20px;
    text-align: center;
}

.upgrade-icon {
    width: 40px;
    height: 40px;
    background: var(--ink);
    color: var(--yellow-deep);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 16px;
}

.upgrade-card h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--ink);
    margin-bottom: 4px;
}

.upgrade-card p {
    font-size: 11px;
    color: var(--ink-soft);
    margin-bottom: 12px;
}

.upgrade-btn {
    background: var(--ink);
    color: white;
    padding: 8px 20px;
    border-radius: var(--r-pill);
    font-size: 12px;
    font-weight: 600;
    width: 100%;
    display: block;
    transition: all 0.3s;
}

.upgrade-btn:hover { background: var(--card-solid); color: var(--ink); }

/* ============================================
   ✅ MAIN CONTENT - BIGGER GAP
   ============================================ */
.main-content {
    display: flex;
    flex-direction: column;
    gap: 28px;
    min-width: 0;
}

/* ===== TOPBAR ===== */
.topbar {
    background: var(--card-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--r-lg);
    padding: 14px 20px;
    border: 1px solid var(--border-soft);
    display: flex;
    align-items: center;
    gap: 12px;
    position: sticky;
    top: 16px;
    z-index: 50;
}

.mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    background: var(--card-solid);
    border-radius: var(--r-pill);
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: var(--ink);
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-line);
    flex-shrink: 0;
}

.search-box {
    flex: 1;
    background: var(--card-solid);
    border-radius: var(--r-pill);
    padding: 10px 18px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-line);
    min-width: 0;
}

.search-box i { color: var(--gray-400); font-size: 14px; flex-shrink: 0; }

.search-box input {
    flex: 1;
    border: none;
    outline: none;
    background: transparent;
    font-size: 14px;
    color: var(--ink);
    min-width: 0;
}

.search-shortcut {
    font-size: 11px;
    color: var(--gray-400);
    background: var(--bg-soft);
    padding: 3px 8px;
    border-radius: 6px;
    font-weight: 500;
    flex-shrink: 0;
}

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

.chip {
    background: var(--card-solid);
    padding: 10px 16px;
    border-radius: var(--r-pill);
    font-size: 13px;
    font-weight: 500;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-soft);
    border: 1px solid var(--border-line);
    transition: all 0.2s;
    white-space: nowrap;
}

.chip:hover { background: var(--card-glass-strong); }
.chip i { font-size: 12px; color: var(--gray-500); }

.chip-sm {
    background: var(--card-solid);
    padding: 6px 12px;
    border-radius: var(--r-pill);
    font-size: 12px;
    font-weight: 500;
    color: var(--gray-700);
    display: flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--border-line);
    transition: all 0.2s;
}

.chip-sm:hover { background: var(--card-glass-strong); }
.chip-sm i { font-size: 10px; }

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--card-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--r-lg);
    padding: 24px;
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-card);
    margin-bottom: 17px;
}

.card-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-line);
    flex-wrap: wrap;
}

.card-head > div:first-child {
    flex: 1;
    min-width: 0;
}

.card-head h2 {
    font-size: 19px;
    font-weight: 700;
    color: var(--ink);
    margin: 0 0 4px 0;
    line-height: 1.3;
}

.muted {
    color: var(--gray-500);
    font-size: 13px;
    font-weight: 400;
    margin: 0;
}

/* ===== TAGS ===== */
.tag {
    padding: 6px 14px;
    border-radius: var(--r-pill);
    font-size: 12px;
    font-weight: 700;
    display: inline-block;
    white-space: nowrap;
    flex-shrink: 0;
}

.tag.pink   { background: var(--pink);   color: #9F1239; }
.tag.green  { background: var(--green);  color: #166534; }
.tag.peach  { background: var(--peach);  color: #9A3412; }
.tag.blue   { background: var(--blue);   color: #1E40AF; }
.tag.purple { background: var(--purple); color: #5B21B6; }
.tag.yellow { background: var(--yellow); color: #92400E; }

/* ===== EYEBROW ===== */
.eyebrow-pill {
    display: inline-block;
    background: rgba(255,255,255,0.7);
    padding: 6px 14px;
    border-radius: var(--r-pill);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--ink);
    margin-bottom: 14px;
}

.serif-italic {
    font-family: 'Instrument Serif', serif;
    font-style: italic;
    font-weight: 400;
}

/* ============================================
   ✅ TOOLS GRID - 5 COLUMNS (Smaller Cards)
   ============================================ */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 12px;
}

/* ============================================
   ✅ TOOL CARD - SMALLER & COMPACT
   ============================================ */
.tool-card {
    background: var(--card-solid);
    border-radius: var(--r-md);
    padding: 14px;
    border: 1px solid var(--border-line);
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 150px;
    text-decoration: none;
    color: inherit;
    position: relative;
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(0,0,0,0.08);
}

.tool-card-icon {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.tool-card-icon.green  { background: var(--green);  color: #166534; }
.tool-card-icon.pink   { background: var(--pink);   color: #9F1239; }
.tool-card-icon.blue   { background: var(--blue);   color: #1E40AF; }
.tool-card-icon.peach  { background: var(--peach);  color: #9A3412; }
.tool-card-icon.purple { background: var(--purple); color: #5B21B6; }
.tool-card-icon.yellow { background: var(--yellow); color: #92400E; }

.tool-card-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--ink);
    line-height: 1.3;
    margin: 0;
}

.tool-card-desc {
    font-size: 11px;
    color: var(--gray-500);
    line-height: 1.5;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0;
}

.tool-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    gap: 6px;
}

.tool-card-arrow {
    width: 24px;
    height: 24px;
    background: var(--bg-soft);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--gray-500);
    transition: all 0.2s;
    flex-shrink: 0;
}

.tool-card:hover .tool-card-arrow {
    background: var(--ink);
    color: white;
}

.tool-badge {
    font-size: 9px;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--r-pill);
    white-space: nowrap;
}

.tool-badge.popular { background: var(--yellow); color: #92400E; }
.tool-badge.new     { background: var(--green);  color: #166534; }

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    background: var(--holo) !important;
    border: 1px solid rgba(255,255,255,0.6) !important;
    position: relative;
    overflow: hidden;
    padding: 36px !important;
    margin-bottom: 20px;
}

.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(45deg, transparent 40%, rgba(255,255,255,0.3) 50%, transparent 60%);
    animation: shine 4s infinite;
    pointer-events: none;
}

@keyframes shine {
    0%   { transform: translateX(-100%); }
    100% { transform: translateX(200%); }
}

.hero-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
    position: relative;
}

.hero-text { flex: 1; min-width: 280px; }

.hero-title {
    font-size: 38px;
    font-weight: 700;
    color: var(--ink);
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin: 10px 0;
}

.hero-sub {
    color: var(--ink-soft);
    font-size: 14px;
    max-width: 480px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.hero-btns { display: flex; gap: 10px; flex-wrap: wrap; }

.btn-primary {
    background: var(--ink);
    color: white;
    padding: 12px 24px;
    border-radius: var(--r-pill);
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.btn-ghost {
    background: rgba(255,255,255,0.7);
    color: var(--ink);
    padding: 12px 24px;
    border-radius: var(--r-pill);
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
    border: 1px solid rgba(255,255,255,0.8);
}

.btn-ghost:hover { background: white; transform: translateY(-2px); }

.hero-stats {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(10px);
    padding: 18px 24px;
    border-radius: var(--r-lg);
    border: 1px solid rgba(255,255,255,0.8);
    flex-wrap: wrap;
}

.hs-item { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.hs-value { font-size: 22px; font-weight: 700; color: var(--ink); line-height: 1; }
.hs-label { font-size: 11px; color: var(--gray-500); font-weight: 500; }
.hs-divider { width: 1px; height: 32px; background: rgba(0,0,0,0.08); }

/* ============================================
   EMPTY STATE
   ============================================ */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    grid-column: 1 / -1;
}

.empty-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 16px;
    background: var(--bg-soft);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--gray-400);
}

.empty-state h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--ink);
}

.empty-state p { font-size: 13px; color: var(--gray-500); }

/* ============================================
   FLOAT BTN
   ============================================ */
.float-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--ink);
    color: white;
    border-radius: 50%;
    font-size: 16px;
    z-index: 100;
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
}

.float-btn.visible { opacity: 1; pointer-events: auto; }
.float-btn:hover { background: var(--holo); color: var(--ink); transform: scale(1.1); }

/* ============================================
   SIDEBAR OVERLAY
   ============================================ */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.3);
    z-index: 99;
    backdrop-filter: blur(2px);
}

.sidebar-overlay.show { display: block; }

/* ============================================
   FOOTER
   ============================================ */
.main-footer {
    padding: 20px 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--gray-500);
    flex-wrap: wrap;
    gap: 10px;
}

.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }
.footer-links a { color: var(--gray-500); transition: color 0.2s; }
.footer-links a:hover { color: var(--ink); }

/* ===== HELPERS ===== */
.hide-sm { display: inline; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1400px) {
    .tools-grid {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}

@media (max-width: 1100px) {
    .tools-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 968px) {
    .mobile-menu-btn { display: flex !important; }
    .hide-sm { display: none; }

    .sidebar {
        position: fixed;
        left: -300px;
        top: 0;
        height: 100vh;
        z-index: 100;
        border-radius: 0 var(--r-lg) var(--r-lg) 0;
        transition: left 0.3s ease;
        margin: 0;
        width: 280px;
        align-self: stretch;
    }

    .sidebar.open { left: 0; }

    .app-frame {
        grid-template-columns: 1fr;
        padding: 12px;
        gap: 12px;
    }

    .topbar { top: 12px; }
    .main-content { gap: 20px; }
    .card { padding: 20px; }
    .hero-section { padding: 24px !important; }
    .hero-title { font-size: 28px; }
}

@media (max-width: 700px) {
    .tools-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }
    .tool-card {
        padding: 12px;
        min-height: 140px;
        gap: 8px;
    }
    .main-content { gap: 16px; }
    .card { padding: 16px; }
    .hero-section { padding: 20px !important; }
    .hero-inner { flex-direction: column; }
    .hero-stats { width: 100%; justify-content: space-around; }
    .search-shortcut { display: none; }
    .card-head h2 { font-size: 17px; }
    .card-head {
        margin-bottom: 16px;
        padding-bottom: 12px;
    }
}

@media (max-width: 480px) {
    .tools-grid { grid-template-columns: 1fr; }
    .tool-card { min-height: auto; }
    .app-frame { padding: 8px; gap: 8px; }
    .card {
        padding: 14px;
        border-radius: var(--r-md);
    }
    .hero-section {
        padding: 18px !important;
        border-radius: var(--r-md) !important;
    }
    .hero-title { font-size: 22px; }
    .main-footer { padding: 16px 4px; flex-direction: column; text-align: center; }
}