@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@500;600;700;800;900&display=swap');

/* ============================================================
   DESIGN SYSTEM — PREMIUM LIGHT THEME
   ============================================================ */
:root {
    /* Brand Colors */
    --primary:        hsl(244, 84%, 58%);   /* #5B52F0 indigo */
    --primary-light:  hsl(244, 100%, 96%);
    --primary-hover:  hsl(244, 84%, 50%);
    --secondary:      hsl(199, 89%, 45%);   /* #0EA5E9 sky */
    --accent:         hsl(161, 74%, 42%);   /* #10B981 emerald */
    --danger:         hsl(339, 90%, 54%);   /* #F43F5E rose */
    --purple:         hsl(270, 76%, 58%);
    --amber:          hsl(38, 95%, 52%);

    /* Light Backgrounds */
    --bg-root:        hsl(220, 30%, 97%);
    --bg-surface:     hsl(220, 25%, 94%);
    --bg-card:        #ffffff;
    --bg-glass:       rgba(255,255,255,0.75);
    --bg-glass-hover: rgba(255,255,255,0.92);
    --bg-input:       hsl(220, 25%, 96%);

    /* Borders */
    --border:         hsl(220, 20%, 88%);
    --border-focus:   rgba(91,82,240,0.4);
    --border-glow:    rgba(91,82,240,0.2);

    /* Shadows */
    --shadow-sm:  0 1px 4px rgba(60,72,100,0.07), 0 2px 8px rgba(60,72,100,0.04);
    --shadow-md:  0 6px 24px rgba(60,72,100,0.10), 0 2px 8px rgba(60,72,100,0.06);
    --shadow-lg:  0 16px 48px rgba(60,72,100,0.13), 0 4px 16px rgba(60,72,100,0.08);
    --shadow-glow: 0 0 40px rgba(91,82,240,0.12);
    --shadow-btn: 0 8px 24px rgba(91,82,240,0.28);

    /* Text */
    --text-main:  hsl(222, 40%, 12%);
    --text-soft:  hsl(222, 20%, 38%);
    --text-muted: hsl(222, 15%, 58%);

    /* Radii & Transitions */
    --r-xl:  28px;
    --r-lg:  20px;
    --r-md:  14px;
    --r-sm:  10px;
    --r-xs:  7px;
    --ease:  cubic-bezier(0.4, 0, 0.2, 1);
    --trans: all 0.3s var(--ease);

    --nav-h: 68px;
}

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

/* ── SCROLLBAR ── */
::-webkit-scrollbar         { width: 6px; }
::-webkit-scrollbar-track   { background: var(--bg-root); }
::-webkit-scrollbar-thumb   { background: hsl(244,60%,82%); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ── BODY ── */
body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-root);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* ── AMBIENT GRADIENT BLOBS ── */
body::before, body::after {
    content: '';
    position: fixed;
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    filter: blur(90px);
    animation: floatOrb 14s ease-in-out infinite alternate;
}
body::before {
    width: 700px; height: 700px;
    top: -250px; left: -200px;
    background: radial-gradient(circle, rgba(91,82,240,0.10) 0%, transparent 70%);
}
body::after {
    width: 600px; height: 600px;
    bottom: -180px; right: -180px;
    background: radial-gradient(circle, rgba(14,165,233,0.09) 0%, transparent 70%);
    animation-delay: -7s;
}
@keyframes floatOrb {
    from { transform: translate(0,0) scale(1); }
    to   { transform: translate(30px,40px) scale(1.07); }
}

/* ═══════════════════════════════════
   NAVBAR
══════════════════════════════════════ */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 5%;
    height: var(--nav-h);
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 16px rgba(60,72,100,0.07);
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.02em;
    text-decoration: none;
    flex-shrink: 0;
}
.logo-icon {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 14px rgba(91,82,240,0.35);
    flex-shrink: 0;
}
.logo-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

/* Nav Links */
.nav-links {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
}
.nav-links > li > a,
.nav-links > li > button {
    color: var(--text-soft);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.5rem 1.1rem;
    border-radius: var(--r-sm);
    transition: var(--trans);
    background: none;
    border: none;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    display: flex; align-items: center; gap: 5px;
}
.nav-links > li > a:hover,
.nav-links > li > button:hover {
    color: var(--primary);
    background: var(--primary-light);
}
.nav-links > li > a.active { color: var(--primary); }

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown .dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    min-width: 200px;
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transition: var(--trans);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}
.nav-dropdown:hover .dropdown-menu,
.nav-dropdown.open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}
.dropdown-menu a {
    display: flex; align-items: center; gap: 8px;
    padding: 0.65rem 1rem;
    color: var(--text-soft);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    border-radius: var(--r-sm);
    transition: var(--trans);
}
.dropdown-menu a:hover {
    background: var(--primary-light);
    color: var(--primary);
    padding-left: 1.3rem;
}
.dropdown-menu a .d-icon {
    width: 6px; height: 6px;
    background: var(--primary);
    border-radius: 50%;
    flex-shrink: 0;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    transition: var(--trans);
}
.hamburger:hover { background: var(--primary-light); border-color: var(--border-focus); }
.hamburger span {
    display: block;
    width: 22px; height: 2px;
    background: var(--text-soft);
    border-radius: 2px;
    transition: var(--trans);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--primary); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--primary); }

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(255,255,255,0.97);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 5% 2rem;
    z-index: 998;
    flex-direction: column;
    gap: 0.2rem;
    animation: slideDown 0.3s var(--ease);
    box-shadow: var(--shadow-md);
}
.mobile-menu.open { display: flex; }
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to   { opacity: 1; transform: translateY(0); }
}
.mobile-menu a, .mobile-menu .mobile-section-title {
    display: block;
    padding: 0.7rem 1rem;
    color: var(--text-soft);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--r-sm);
    transition: var(--trans);
}
.mobile-menu a:hover { background: var(--primary-light); color: var(--primary); }
.mobile-menu a.active { color: var(--primary); background: var(--primary-light); }
.mobile-section-title {
    font-size: 0.72rem;
    font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding-bottom: 0.2rem;
    margin-top: 0.65rem;
    cursor: default;
}
.mobile-menu .sub-link { padding-left: 2rem; font-size: 0.88rem; }

/* ═══════════════════════════════════
   MAIN
══════════════════════════════════════ */
main { flex: 1; position: relative; z-index: 1; }

/* ═══════════════════════════════════
   HERO
══════════════════════════════════════ */
.hero {
    text-align: center;
    padding: 5rem 5% 4rem;
    position: relative;
    overflow: hidden;
}
/* subtle grid */
.hero::before {
    content: '';
    position: absolute; inset: 0;
    background-image:
        linear-gradient(var(--border) 1px, transparent 1px),
        linear-gradient(90deg, var(--border) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
    mask-image: radial-gradient(ellipse at center, black 25%, transparent 75%);
    opacity: 0.55;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--primary-light);
    border: 1px solid rgba(91,82,240,0.2);
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 700;
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    margin-bottom: 2rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}
.hero-badge .badge-dot {
    width: 7px; height: 7px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%,100% { opacity:1; transform:scale(1); }
    50%      { opacity:0.5; transform:scale(0.75); }
}

.hero h1 {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(2.4rem, 7vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.04em;
    color: var(--text-main);
    margin-bottom: 1.4rem;
}
.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200%;
    animation: gradShift 5s ease-in-out infinite alternate;
}
@keyframes gradShift {
    from { background-position: 0% 50%; }
    to   { background-position: 100% 50%; }
}

.hero-desc {
    color: var(--text-soft);
    font-size: 1.13rem;
    max-width: 550px;
    margin: 0 auto 2rem;
    line-height: 1.75;
}

/* Stat pills */
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}
.stat-pill {
    display: flex; align-items: center; gap: 6px;
    background: #fff;
    border: 1px solid var(--border);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--text-soft);
    box-shadow: var(--shadow-sm);
    transition: var(--trans);
}
.stat-pill:hover { border-color: var(--border-focus); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.stat-pill .s-icon { font-size: 1rem; }
.stat-pill strong { color: var(--text-main); }

/* ═══════════════════════════════════
   COMPRESSOR CARD
══════════════════════════════════════ */
.compressor-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 2.5rem;
    position: relative;
    box-shadow: var(--shadow-lg);
    max-width: 1100px;
    margin: 0 auto;
    overflow: hidden;
}
.compressor-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
    border-radius: var(--r-xl) var(--r-xl) 0 0;
}

/* ── UPLOAD AREA ── */
.upload-area {
    border: 2px dashed hsl(244,60%,82%);
    border-radius: var(--r-lg);
    padding: 3.5rem 2rem;
    text-align: center;
    background: var(--primary-light);
    cursor: pointer;
    transition: var(--trans);
    position: relative;
    overflow: hidden;
}
.upload-area:hover, .upload-area.dragover {
    border-color: var(--primary);
    background: hsl(244,100%,94%);
    transform: translateY(-2px);
    box-shadow: 0 0 0 4px rgba(91,82,240,0.08), var(--shadow-md);
}
.upload-area.has-files {
    padding: 2rem;
    background: transparent;
    border: 2px dashed var(--border);
    cursor: default;
    overflow: visible; /* To allow shadows on inner cards to show */
}
.upload-area.has-files:hover {
    box-shadow: none;
    transform: none;
    border-color: var(--border-focus);
}
.upload-icon {
    width: 80px; height: 80px;
    background: linear-gradient(135deg, rgba(91,82,240,0.12), rgba(14,165,233,0.12));
    border: 1.5px solid rgba(91,82,240,0.2);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.5rem;
    color: var(--primary);
    box-shadow: 0 6px 24px rgba(91,82,240,0.14);
    transition: var(--trans);
}
.upload-area:hover .upload-icon { transform: scale(1.08) translateY(-2px); box-shadow: 0 10px 30px rgba(91,82,240,0.22); }
.upload-area p { color: var(--text-main); font-weight: 600; font-size: 1.05rem; margin-bottom: 0.35rem; }
.upload-area span { font-size: 0.88rem; color: var(--text-muted); }
.upload-formats {
    display: flex; justify-content: center; gap: 0.5rem; margin-top: 1rem; flex-wrap: wrap;
}
.fmt-tag {
    background: rgba(91,82,240,0.08);
    border: 1px solid rgba(91,82,240,0.15);
    border-radius: 5px;
    padding: 0.2rem 0.6rem;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.05em;
}

/* ── BUTTONS ── */
.btn-primary {
    display: inline-flex; align-items: center; gap: 8px;
    background: linear-gradient(135deg, var(--primary), hsl(244,84%,52%));
    color: white; border: none;
    padding: 0.85rem 2rem; border-radius: 50px;
    font-weight: 700; cursor: pointer; font-size: 0.95rem;
    transition: var(--trans); margin-top: 1.2rem;
    box-shadow: var(--shadow-btn);
    font-family: 'Inter', sans-serif;
    position: relative; overflow: hidden;
    letter-spacing: 0.01em;
}
.btn-primary::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to bottom, rgba(255,255,255,0.15), transparent);
    pointer-events: none;
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 36px rgba(91,82,240,0.38); }
.btn-primary:active { transform: translateY(-1px); }

/* ── SETTINGS AREA ── */
.settings-area {
    margin-top: 2rem;
    padding: 1.75rem;
    background: var(--bg-root);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    display: flex; flex-direction: column; gap: 1.25rem;
}
.settings-title {
    font-size: 0.72rem; font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.12em;
    margin-bottom: -0.25rem;
}
.input-row { display: flex; gap: 1.25rem; flex-wrap: wrap; align-items: flex-end; }
.input-group { display: flex; flex-direction: column; gap: 0.4rem; }
.input-group label {
    font-size: 0.74rem; font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.08em;
}
.input-group input, .input-group select, select {
    background: #fff !important;
    border: 1.5px solid var(--border) !important;
    color: var(--text-main) !important;
    padding: 0.7rem 0.9rem;
    border-radius: var(--r-sm) !important;
    width: 145px;
    outline: none;
    font-family: 'Inter', sans-serif;
    font-size: 0.92rem; font-weight: 500;
    transition: var(--trans);
    appearance: none; -webkit-appearance: none;
    box-shadow: var(--shadow-sm);
}
.input-group input::placeholder { color: var(--text-muted); font-weight: 400; }
.input-group input:focus, .input-group select:focus, select:focus {
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 4px rgba(91,82,240,0.10) !important;
}
.input-group select, select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='%236B7A9E'%3E%3Cpath d='M5.293 7.293a1 1 0 011.414 0L10 10.586l3.293-3.293a1 1 0 111.414 1.414l-4 4a1 1 0 01-1.414 0l-4-4a1 1 0 010-1.414z'/%3E%3C/svg%3E") !important;
    background-repeat: no-repeat !important;
    background-position: right 0.75rem center !important;
    background-size: 16px !important;
    padding-right: 2.25rem !important;
}

/* ── WATERMARK SECTION ── */
.watermark-section {
    border: 1.5px solid var(--border);
    border-radius: var(--r-md);
    overflow: hidden;
    background: #fff;
    box-shadow: var(--shadow-sm);
}
.watermark-toggle {
    display: flex; justify-content: space-between; align-items: center;
    padding: 0.85rem 1.1rem; cursor: pointer;
    font-size: 0.9rem; color: var(--text-soft); font-weight: 600;
    transition: background 0.2s; user-select: none;
}
.watermark-toggle:hover { background: var(--primary-light); }
.toggle-icon {
    width: 22px; height: 22px;
    background: var(--primary-light);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1rem; color: var(--primary); transition: var(--trans);
}
#watermark-panel { padding: 1rem 1.1rem; border-top: 1px solid var(--border); background: var(--bg-root); }

/* ── ACTION BUTTONS ── */
.action-buttons { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.btn-action {
    flex: 1; min-width: 140px;
    display: inline-flex; align-items: center; justify-content: center; gap: 7px;
    background: linear-gradient(135deg, var(--primary), hsl(244,84%,52%));
    color: white; border: none;
    padding: 0.9rem 1.5rem; border-radius: var(--r-md);
    font-weight: 700; cursor: pointer; font-size: 0.92rem;
    transition: var(--trans); font-family: 'Inter', sans-serif;
    box-shadow: 0 4px 16px rgba(91,82,240,0.22);
    position: relative; overflow: hidden; letter-spacing: 0.01em;
}
.btn-action::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to bottom, rgba(255,255,255,0.12), transparent);
    pointer-events: none;
}
.btn-action:disabled {
    background: var(--bg-surface); color: var(--text-muted);
    cursor: not-allowed; box-shadow: none; border: 1.5px solid var(--border);
}
.btn-action:not(:disabled):hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 28px rgba(91,82,240,0.35);
    filter: brightness(1.05);
}
.btn-action:not(:disabled):active { transform: translateY(-1px); }
.btn-zip { background: linear-gradient(135deg, hsl(270,76%,54%), hsl(270,76%,45%)); box-shadow: 0 4px 16px rgba(124,58,237,0.22); }
.btn-zip:not(:disabled):hover { box-shadow: 0 12px 28px rgba(124,58,237,0.38); }
.btn-pdf { background: linear-gradient(135deg, hsl(0,75%,50%), hsl(0,75%,42%)); box-shadow: 0 4px 16px rgba(220,38,38,0.22); }
.btn-pdf:not(:disabled):hover { box-shadow: 0 12px 28px rgba(220,38,38,0.38); }

/* Checkbox */
.checkbox-group { display: flex; align-items: center; gap: 10px; }
.checkbox-group label {
    font-size: 0.88rem; color: var(--text-soft) !important;
    font-weight: 500 !important; cursor: pointer;
    text-transform: none !important; letter-spacing: 0 !important;
}
input[type="checkbox"] { accent-color: var(--primary); width: 16px; height: 16px; cursor: pointer; }

/* ── COLOR SWATCHES ── */
.color-swatches { display: flex; gap: 7px; align-items: center; padding-top: 4px; flex-wrap: wrap; }
.swatch {
    width: 26px; height: 26px; border-radius: 50%; cursor: pointer;
    border: 2px solid var(--border); transition: var(--trans); box-shadow: var(--shadow-sm);
}
.swatch:hover { transform: scale(1.2); border-color: var(--primary); }
.swatch.active { border-color: var(--primary); transform: scale(1.25); box-shadow: 0 0 0 3px rgba(91,82,240,0.25); }

/* ═══════════════════════════════════
   IMAGE GRID
══════════════════════════════════════ */
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1.25rem; margin-top: 2rem;
}
.img-card {
    background: #fff;
    border: 1.5px solid var(--border);
    border-radius: var(--r-lg);
    padding: 1.1rem; position: relative;
    display: flex; flex-direction: column; gap: 0.55rem;
    transition: var(--trans); box-shadow: var(--shadow-sm);
    text-align: left;
}
.img-card:hover {
    border-color: rgba(91,82,240,0.3);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md), 0 0 0 1px rgba(91,82,240,0.1);
}
.img-card img.thumb {
    width: 100%; height: 150px; object-fit: cover;
    border-radius: var(--r-sm);
    background: var(--bg-input);
    border: 1px solid var(--border);
}
.img-card .file-name { font-size: 0.9rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--text-main); }
.img-card .file-size { font-size: 0.82rem; color: var(--text-muted); }
.img-card .status    { font-size: 0.82rem; font-weight: 700; color: var(--accent); }
.img-card .remove-btn {
    position: absolute; top: -10px; right: -10px;
    background: #fff; border: 1.5px solid var(--border);
    color: var(--danger); border-radius: 50%;
    width: 28px; height: 28px; cursor: pointer; font-size: 1rem;
    display: flex; align-items: center; justify-content: center;
    transition: var(--trans); box-shadow: var(--shadow-sm); z-index: 2;
}
.img-card .remove-btn:hover { background: var(--danger); color: #fff; border-color: transparent; transform: scale(1.15); }
.card-actions {
    display: flex; gap: 0.45rem; margin-top: auto;
    flex-wrap: wrap; padding-top: 0.6rem;
    border-top: 1px solid var(--border);
}
.card-actions button, .btn-download {
    flex: 1; padding: 0.5rem 0.4rem; font-size: 0.8rem;
    border: none; border-radius: var(--r-xs); cursor: pointer;
    color: white; font-weight: 700; transition: var(--trans);
    font-family: 'Inter', sans-serif;
}
.card-actions button:hover { transform: translateY(-1px); filter: brightness(1.1); box-shadow: 0 4px 12px rgba(0,0,0,0.15); }
.btn-crop      { background: linear-gradient(135deg, #6366F1, #4f46e5); }
.btn-preview   { background: linear-gradient(135deg, #0EA5E9, #0284c7); }
.btn-remove-bg { background: linear-gradient(135deg, #EC4899, #be185d); }
.btn-download {
    background: linear-gradient(135deg, var(--accent), hsl(161,74%,35%));
    text-decoration: none; text-align: center; display: inline-block;
}
.btn-download:hover { filter: brightness(1.1); transform: translateY(-1px); }

/* ── AI OVERLAY ── */
.ai-overlay {
    position: absolute; inset: 0;
    background: rgba(255,255,255,0.92); backdrop-filter: blur(6px);
    z-index: 10; display: none;
    flex-direction: column; align-items: center; justify-content: center;
    border-radius: var(--r-lg); gap: 8px;
}
.ai-overlay.active { display: flex; }
.ai-overlay small { color: var(--text-main); font-size: 0.88rem; font-weight: 700; }
.ai-overlay .loader {
    width: 38px; height: 38px; border-radius: 50%;
    border: 3px solid rgba(91,82,240,0.15);
    border-top-color: var(--primary);
    animation: spin 0.7s linear infinite; margin-bottom: 6px;
    box-shadow: 0 0 14px rgba(91,82,240,0.18);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════
   MODALS
══════════════════════════════════════ */
.modal {
    display: none; position: fixed; inset: 0;
    background: rgba(15,20,50,0.55);
    backdrop-filter: blur(8px);
    z-index: 2000; align-items: center; justify-content: center; padding: 1rem;
}
.modal.active { display: flex; animation: modalFadeIn 0.3s var(--ease); }
@keyframes modalFadeIn { from { opacity:0; } to { opacity:1; } }
.modal-content {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    width: 90%; max-width: 800px; max-height: 90vh;
    display: flex; flex-direction: column;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: modalSlideUp 0.3s var(--ease);
}
@keyframes modalSlideUp {
    from { transform: translateY(20px) scale(0.97); opacity:0; }
    to   { transform: translateY(0) scale(1); opacity:1; }
}
.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex; justify-content: space-between; align-items: center;
    background: var(--bg-root);
}
.modal-header h3 { font-weight: 700; font-family: 'Outfit', sans-serif; font-size: 1.2rem; color: var(--text-main); }
.close-btn {
    font-size: 1.5rem; cursor: pointer; color: var(--text-muted);
    transition: var(--trans); line-height: 1;
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%; background: var(--bg-surface);
}
.close-btn:hover { color: var(--danger); background: hsl(339,100%,95%); }
.modal-footer {
    padding: 1rem 1.5rem; border-top: 1px solid var(--border);
    text-align: right; background: var(--bg-root);
}
.crop-container {
    flex: 1; min-height: 400px; padding: 1.25rem;
    display: flex; align-items: center; justify-content: center;
    background: var(--bg-surface);
}
.crop-container img { max-width: 100%; max-height: 60vh; box-shadow: var(--shadow-md); border-radius: 8px; }

/* Before/After Slider */
.preview-content { max-width: 650px; }
.comparison-slider {
    position: relative; width: 100%; height: 420px;
    overflow: hidden; background: var(--bg-surface); user-select: none;
}
.comparison-slider img { position: absolute; top:0; left:0; width:100%; height:100%; object-fit: contain; }
.comparison-slider .resize {
    position: absolute; top:0; left:0; height:100%; width:50%; overflow:hidden;
    border-right: 2px solid var(--primary); box-shadow: 2px 0 16px rgba(91,82,240,0.25);
}
.comparison-slider .handle {
    position: absolute; top:50%; left:50%; transform: translate(-50%,-50%);
    width: 44px; height: 44px;
    background: var(--primary); border-radius: 50%; cursor: ew-resize;
    display: flex; justify-content: center; align-items: center;
    box-shadow: 0 0 0 4px rgba(91,82,240,0.2), var(--shadow-md); pointer-events: none;
}
.comparison-slider .handle::after, .comparison-slider .handle::before {
    content:''; width:0; height:0; border:6px solid transparent; position:absolute;
}
.comparison-slider .handle::after  { border-right-color: white; right:2px; }
.comparison-slider .handle::before { border-left-color: white; left:2px; }
.preview-stats {
    display:flex; justify-content:space-between; padding:1rem 1.5rem;
    background:var(--bg-root); font-size:0.95rem; font-weight:500; color:var(--text-soft);
    border-top: 1px solid var(--border);
}
.preview-stats .highlight { color: var(--accent); font-weight: 700; }

/* ═══════════════════════════════════
   CONTENT SECTIONS
══════════════════════════════════════ */
.sections-wrapper {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 5% 6rem;
    display: flex; flex-direction: column; gap: 3.5rem;
}
.section-heading { text-align: center; margin-bottom: 2.25rem; }
.section-heading h2 {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(1.75rem, 4vw, 2.4rem); font-weight: 800;
    color: var(--text-main); letter-spacing: -0.03em; margin-bottom: 0.55rem;
}
.section-heading p { color: var(--text-soft); font-size: 0.98rem; max-width: 480px; margin: 0 auto; }
.section-line {
    width: 48px; height: 3px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 2px; margin: 0.65rem auto 0;
}

/* ── HOW IT WORKS ── */
.how-it-works {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
}
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px,1fr));
    gap: 1.5rem; margin-top: 2rem;
}
.step-card {
    background: var(--bg-root);
    border: 1.5px solid var(--border);
    border-radius: var(--r-lg);
    padding: 1.75rem 1.5rem; text-align: center;
    transition: var(--trans);
}
.step-card:hover {
    transform: translateY(-6px);
    border-color: rgba(91,82,240,0.25);
    background: var(--primary-light);
    box-shadow: var(--shadow-md);
}
.step-num {
    width: 44px; height: 44px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.25rem;
    font-weight: 800; font-size: 1.15rem; color: white;
    box-shadow: 0 6px 18px rgba(91,82,240,0.28);
}
.step-card h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.05rem; font-weight: 700;
    margin-bottom: 0.55rem; color: var(--text-main);
}
.step-card p { color: var(--text-soft); font-size: 0.9rem; line-height: 1.65; }

/* ── FEATURES ── */
.features-section {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
}
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px,1fr));
    gap: 1.5rem;
}
.feature-box {
    background: var(--bg-root);
    border: 1.5px solid var(--border);
    border-radius: var(--r-lg);
    padding: 2rem 1.75rem; text-align: center;
    transition: var(--trans); position: relative; overflow: hidden;
}
.feature-box::before {
    content: ''; position: absolute;
    top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    opacity: 0; transition: opacity 0.3s;
}
.feature-box:hover {
    transform: translateY(-6px);
    border-color: rgba(91,82,240,0.2);
    background: var(--primary-light);
    box-shadow: var(--shadow-md);
}
.feature-box:hover::before { opacity: 1; }
.feature-icon {
    width: 56px; height: 56px; border-radius: var(--r-md);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 1.25rem; font-size: 1.5rem; transition: var(--trans);
}
.feature-box:hover .feature-icon { transform: scale(1.1) rotate(5deg); }
.fi-purple { background: rgba(124,58,237,0.1); border: 1.5px solid rgba(124,58,237,0.18); }
.fi-blue   { background: rgba(14,165,233,0.1); border: 1.5px solid rgba(14,165,233,0.18); }
.fi-green  { background: rgba(16,185,129,0.1); border: 1.5px solid rgba(16,185,129,0.18); }
.fi-pink   { background: rgba(236,72,153,0.1); border: 1.5px solid rgba(236,72,153,0.18); }
.fi-amber  { background: rgba(245,158,11,0.1); border: 1.5px solid rgba(245,158,11,0.18); }
.fi-red    { background: rgba(239,68,68,0.1);  border: 1.5px solid rgba(239,68,68,0.18); }
.feature-box h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.05rem; font-weight: 700;
    margin-bottom: 0.55rem; color: var(--text-main);
}
.feature-box p { color: var(--text-soft); font-size: 0.88rem; line-height: 1.65; }

/* ── SEO ARTICLE ── */
.seo-section {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
}
.seo-section h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.15rem; font-weight: 700; color: var(--text-main);
    margin: 1.75rem 0 0.65rem;
}
.seo-section h3:first-of-type { margin-top: 0; }
.seo-section p, .seo-section li { color: var(--text-soft); font-size: 0.96rem; line-height: 1.8; margin-bottom: 0.65rem; }
.seo-section ul, .seo-section ol { padding-left: 1.5rem; }
.seo-section li { margin-bottom: 0.4rem; }
.seo-section strong { color: var(--text-main); font-weight: 600; }
.format-grid {
    display: grid; grid-template-columns: repeat(3,1fr); gap: 1rem; margin: 1rem 0;
}
.format-card {
    background: var(--bg-root); border: 1.5px solid var(--border);
    border-radius: var(--r-md); padding: 1rem; transition: var(--trans);
}
.format-card:hover { border-color: rgba(91,82,240,0.25); background: var(--primary-light); }
.format-card .fmt-name {
    font-family: 'Outfit', sans-serif; font-weight: 800; font-size: 1rem;
    color: var(--primary); margin-bottom: 0.4rem;
}
.format-card p { font-size: 0.85rem; color: var(--text-soft); margin: 0; }

/* ── FAQ ── */
.faq-section {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    padding: 3rem;
    box-shadow: var(--shadow-sm);
}
.faq-item {
    border: 1.5px solid var(--border);
    border-radius: var(--r-md);
    overflow: hidden; margin-bottom: 0.75rem; transition: var(--trans);
}
.faq-item:last-child { margin-bottom: 0; }
.faq-item:hover { border-color: rgba(91,82,240,0.22); box-shadow: var(--shadow-sm); }
.faq-item summary {
    font-weight: 600; cursor: pointer; font-size: 0.96rem;
    color: var(--text-main); padding: 1.1rem 1.25rem;
    list-style: none;
    display: flex; justify-content: space-between; align-items: center;
    user-select: none; background: var(--bg-root); transition: var(--trans);
}
.faq-item summary::after {
    content: '+'; font-size: 1.25rem; color: var(--primary);
    transition: transform 0.3s; flex-shrink: 0; margin-left: 1rem;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary:hover { background: var(--primary-light); }
.faq-item p {
    padding: 0 1.25rem 1.1rem; color: var(--text-soft);
    font-size: 0.92rem; line-height: 1.75;
    background: #fff;
}
.faq-item::-webkit-details-marker { display: none; }

/* ═══════════════════════════════════
   FOOTER
══════════════════════════════════════ */
footer {
    background: hsl(220,25%,97%);
    border-top: 1px solid var(--border);
    padding: 3rem 5%; position: relative; z-index: 1;
}
.footer-inner {
    max-width: 1100px; margin: 0 auto;
    display: flex; flex-direction: column;
    align-items: center; gap: 1.5rem; text-align: center;
}
.footer-logo {
    font-family: 'Outfit', sans-serif; font-weight: 800; font-size: 1.2rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.footer-links { display: flex; gap: 1.5rem; flex-wrap: wrap; justify-content: center; }
.footer-links a { color: var(--text-muted); font-size: 0.87rem; text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--primary); }
.footer-copy { color: var(--text-muted); font-size: 0.82rem; }
.trust-badges { display: flex; gap: 0.75rem; flex-wrap: wrap; justify-content: center; }
.trust-badge {
    display: flex; align-items: center; gap: 5px;
    background: #fff; border: 1px solid var(--border);
    padding: 0.35rem 0.85rem; border-radius: 50px;
    font-size: 0.77rem; font-weight: 600; color: var(--text-muted);
    box-shadow: var(--shadow-sm);
}
.trust-badge .tb-dot { width: 6px; height: 6px; background: var(--accent); border-radius: 50%; }

/* ═══════════════════════════════════
   RESPONSIVE — TABLET (max 900px)
══════════════════════════════════════ */
@media (max-width: 900px) {
    .nav-links { display: none; }
    .hamburger { display: flex; }
    .hero { padding: 3.5rem 5% 3rem; }
    .compressor-card { padding: 1.75rem; border-radius: var(--r-lg); }
    .how-it-works, .features-section, .seo-section, .faq-section { padding: 2rem; }
    .format-grid { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════
   RESPONSIVE — MOBILE (max 600px)
══════════════════════════════════════ */
@media (max-width: 600px) {
    :root { --nav-h: 62px; }
    .hero { padding: 2rem 4% 2rem; }
    .hero-stats { gap: 0.45rem; }
    .stat-pill { font-size: 0.74rem; padding: 0.28rem 0.65rem; }

    /* ── Compressor Card ── */
    .compressor-card { padding: 1rem; border-radius: var(--r-md); }
    .upload-area { padding: 2rem 1rem; }
    .upload-area.has-files { padding: 1rem; }

    /* ── Settings: compact 2-column grid ── */
    .settings-area {
        padding: 1rem;
        gap: 0.85rem;
        margin-top: 1.25rem;
    }
    .settings-title { font-size: 0.68rem; margin-bottom: -0.1rem; }

    /* 2-column grid for the inputs row */
    .input-row {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
        align-items: end;
    }

    /* Each input/select takes full width of its grid cell */
    .input-group { width: 100%; }
    .input-group input, .input-group select, select {
        width: 100% !important;
        font-size: 0.84rem;
        padding: 0.55rem 0.65rem;
    }
    .input-group label { font-size: 0.66rem; }

    /* Color swatches: slightly smaller */
    .swatch { width: 22px; height: 22px; }
    .color-swatches { gap: 5px; }

    /* Watermark toggle: smaller */
    .watermark-toggle { padding: 0.65rem 0.85rem; font-size: 0.82rem; }

    /* Checkbox: smaller text */
    .checkbox-group label { font-size: 0.78rem; }

    /* ── Action Buttons: 2-column grid ── */
    .action-buttons {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0.6rem;
    }
    /* Compress button spans full width, ZIP and PDF side-by-side */
    #compress-all-btn, #convert-all-btn, #extract-all-btn {
        grid-column: 1 / -1;
    }
    .btn-action {
        min-width: unset;
        font-size: 0.82rem;
        padding: 0.72rem 0.75rem;
    }

    /* ── Image Grid ── */
    .image-grid { grid-template-columns: 1fr; gap: 1rem; }
    .img-card img.thumb { height: 130px; }

    /* ── Content Sections ── */
    .steps-grid, .feature-grid { grid-template-columns: 1fr; }
    .how-it-works, .features-section, .seo-section, .faq-section { padding: 1.25rem; border-radius: var(--r-lg); }
    .sections-wrapper { gap: 2rem; padding-bottom: 4rem; }
    .comparison-slider { height: 260px; }
    .modal-content { width: 97%; border-radius: var(--r-lg); }
    .footer-links { gap: 0.85rem; }
}
@media (max-width: 380px) {
    .image-grid { grid-template-columns: 1fr; }
    .action-buttons { grid-template-columns: 1fr; }
    #compress-all-btn, #convert-all-btn, #extract-all-btn { grid-column: 1; }
}