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

:root {
    --bg: #0f0f1a;
    --bg-card: rgba(255,255,255,0.04);
    --bg-card-hover: rgba(255,255,255,0.07);
    --border: rgba(255,255,255,0.08);
    --border-focus: rgba(139,92,246,0.6);
    --text: #f0f0ff;
    --text-muted: rgba(240,240,255,0.5);
    --text-hint: rgba(240,240,255,0.35);
    --accent: #8b5cf6;
    --accent2: #06b6d4;
    --accent-glow: rgba(139,92,246,0.3);
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --transition: 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* ===== BG ORBS ===== */
.bg-orbs { position: fixed; inset: 0; pointer-events: none; z-index: 0; overflow: hidden; }
.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.15;
    animation: float 20s ease-in-out infinite;
}
.orb-1 { width: 600px; height: 600px; background: #8b5cf6; top: -200px; left: -200px; animation-delay: 0s; }
.orb-2 { width: 500px; height: 500px; background: #06b6d4; bottom: -100px; right: -100px; animation-delay: -7s; }
.orb-3 { width: 400px; height: 400px; background: #ec4899; top: 50%; left: 50%; transform: translate(-50%,-50%); animation-delay: -14s; }

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    33% { transform: translateY(-40px) scale(1.05); }
    66% { transform: translateY(20px) scale(0.95); }
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 24px 80px;
    position: relative;
    z-index: 1;
}

/* ===== HEADER ===== */
.header {
    text-align: center;
    padding: 60px 20px 50px;
}

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    border-radius: 18px;
    margin-bottom: 20px;
    box-shadow: 0 0 40px var(--accent-glow);
}
.logo-mark svg { width: 36px; height: 36px; color: white; }

.header h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.1;
    margin-bottom: 12px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* ===== MAIN GRID ===== */
.main-grid {
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 24px;
    align-items: start;
}

@media (max-width: 1100px) {
    .main-grid { grid-template-columns: 1fr; }
    .preview-panel { order: -1; }
    .preview-sticky { position: static !important; }
}

/* ===== CARDS ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 16px;
    backdrop-filter: blur(20px);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.card:hover { border-color: rgba(139,92,246,0.2); }

.card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}
.card-icon { font-size: 1.2rem; }
.card-header h2 { font-size: 1rem; font-weight: 600; flex: 1; }

.live-badge {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 1px;
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 3px 8px;
    border-radius: 20px;
    animation: pulse-live 2s ease-in-out infinite;
}
@keyframes pulse-live {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ===== FORM ELEMENTS ===== */
.form-group { margin-bottom: 18px; }
.form-group:last-child { margin-bottom: 0; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.input-wrapper {
    position: relative;
    display: flex;
}
.input-wrapper input {
    flex: 1;
    padding-right: 40px;
}

input[type="text"],
input[type="url"] {
    width: 100%;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-family: inherit;
    font-size: 0.95rem;
    padding: 11px 14px;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}
input[type="text"]:focus,
input[type="url"]:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
input[type="text"]::placeholder { color: var(--text-hint); }

.btn-clear {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85rem;
    padding: 4px;
    border-radius: 4px;
    transition: color var(--transition);
}
.btn-clear:hover { color: var(--text); }

/* Quick fill pills */
.quick-fill {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 10px;
}
.quick-label { font-size: 0.75rem; color: var(--text-hint); }
.pill {
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.75rem;
    font-family: inherit;
    padding: 4px 12px;
    transition: all var(--transition);
}
.pill:hover {
    background: rgba(139,92,246,0.2);
    border-color: var(--accent);
    color: var(--text);
}

/* ===== COLOR TABS ===== */
.color-tabs {
    display: flex;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 3px;
    gap: 3px;
    margin-bottom: 18px;
}
.color-tab {
    flex: 1;
    background: none;
    border: none;
    border-radius: 8px;
    color: var(--text-muted);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 500;
    padding: 8px 10px;
    transition: all var(--transition);
}
.color-tab.active {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: white;
    box-shadow: 0 2px 10px var(--accent-glow);
}
.color-tab:not(.active):hover { background: rgba(255,255,255,0.06); color: var(--text); }

/* ===== GRAD DIRECTIONS ===== */
.grad-directions {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}
.grad-dir-option { cursor: pointer; }
.grad-dir-option input { display: none; }
.grad-dir-option span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 1.1rem;
    color: var(--text-muted);
    transition: all var(--transition);
    background: rgba(255,255,255,0.03);
}
.grad-dir-option input:checked + span {
    border-color: var(--accent);
    background: rgba(139,92,246,0.2);
    color: var(--text);
    box-shadow: 0 0 0 1px var(--accent);
}
.grad-dir-option span:hover { border-color: rgba(139,92,246,0.4); background: rgba(139,92,246,0.08); }

/* ===== COLOR INPUTS ===== */
.color-input-group {
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    transition: border-color var(--transition);
}
.color-input-group:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

input[type="color"] {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    padding: 0;
    background: none;
    outline: none;
}

.color-input-group input[type="text"] {
    flex: 1;
    background: transparent;
    border: none;
    padding: 4px 0;
    font-size: 0.85rem;
    font-family: 'Courier New', monospace;
}
.color-input-group input[type="text"]:focus {
    border: none;
    box-shadow: none;
}

/* Color presets */
.color-presets {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.color-preset {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.12);
    cursor: pointer;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    flex-shrink: 0;
}
.color-preset:hover {
    transform: scale(1.18);
    border-color: rgba(255,255,255,0.6);
    box-shadow: 0 4px 18px rgba(0,0,0,0.5);
}

/* ===== DOT STYLES ===== */
.dot-styles {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.dot-style-option input { display: none; }
.dot-preview {
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 8px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: rgba(255,255,255,0.03);
}
.dot-preview svg {
    width: 40px;
    height: 40px;
    fill: var(--text-muted);
    display: block;
    margin: 0 auto 8px;
    transition: fill var(--transition);
}
.dot-preview span {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-weight: 500;
}
.dot-style-option input:checked + .dot-preview {
    border-color: var(--accent);
    background: rgba(139,92,246,0.15);
    box-shadow: 0 0 0 1px var(--accent);
}
.dot-style-option input:checked + .dot-preview svg { fill: var(--accent); }
.dot-style-option input:checked + .dot-preview span { color: var(--accent); }
.dot-preview:hover {
    border-color: rgba(139,92,246,0.4);
    background: rgba(139,92,246,0.08);
}

/* ===== CORNER STYLES ===== */
.corner-styles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}
.corner-option input { display: none; }
.corner-preview {
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px 8px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: rgba(255,255,255,0.03);
}
.corner-preview svg {
    width: 40px;
    height: 40px;
    color: var(--text-muted);
    display: block;
    margin: 0 auto 8px;
    transition: color var(--transition);
}
.corner-preview span {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
}
.corner-option input:checked + .corner-preview {
    border-color: var(--accent);
    background: rgba(139,92,246,0.15);
    box-shadow: 0 0 0 1px var(--accent);
}
.corner-option input:checked + .corner-preview svg { color: var(--accent); }
.corner-option input:checked + .corner-preview span { color: var(--accent); }
.corner-preview:hover {
    border-color: rgba(139,92,246,0.4);
    background: rgba(139,92,246,0.08);
}

/* ===== LOGO UPLOAD ===== */
.logo-upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    padding: 30px 20px;
    text-align: center;
    transition: all var(--transition);
    cursor: pointer;
}
.logo-upload-area:hover,
.logo-upload-area.drag-over {
    border-color: var(--accent);
    background: rgba(139,92,246,0.08);
}
.upload-icon { font-size: 2rem; margin-bottom: 8px; }
.logo-upload-area p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 12px; }
.upload-hint { font-size: 0.75rem !important; color: var(--text-hint) !important; margin-top: 8px !important; margin-bottom: 0 !important; }

.btn-upload {
    display: inline-block;
    background: rgba(139,92,246,0.2);
    border: 1px solid rgba(139,92,246,0.4);
    border-radius: 8px;
    color: var(--accent);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    padding: 8px 18px;
    transition: all var(--transition);
}
.btn-upload:hover {
    background: rgba(139,92,246,0.35);
    border-color: var(--accent);
}

.logo-preview-container {
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    margin-bottom: 14px;
}
.logo-preview-container img {
    width: 52px;
    height: 52px;
    object-fit: contain;
    border-radius: 8px;
    background: white;
    padding: 4px;
}
.logo-preview-info { flex: 1; min-width: 0; }
.logo-preview-info span {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.btn-remove-logo {
    background: rgba(239,68,68,0.15);
    border: 1px solid rgba(239,68,68,0.3);
    border-radius: 6px;
    color: #f87171;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.75rem;
    padding: 5px 10px;
    margin-top: 6px;
    transition: all var(--transition);
}
.btn-remove-logo:hover { background: rgba(239,68,68,0.3); }

/* ===== SLIDERS ===== */
input[type="range"] {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(255,255,255,0.1);
    outline: none;
    border: none;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    margin-top: 8px;
}
input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    cursor: pointer;
    box-shadow: 0 2px 8px var(--accent-glow);
    transition: transform var(--transition);
}
input[type="range"]::-webkit-slider-thumb:hover { transform: scale(1.2); }
input[type="range"]::-webkit-slider-runnable-track {
    height: 6px;
    border-radius: 3px;
}

/* ===== EC LEVEL ===== */
.ec-options {
    display: flex;
    gap: 10px;
}
.ec-option {
    flex: 1;
    text-align: center;
    cursor: pointer;
}
.ec-option input { display: none; }
.ec-badge {
    display: block;
    width: 100%;
    padding: 8px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 700;
    border: 2px solid var(--border);
    transition: all var(--transition);
    cursor: pointer;
}
.ec-l { color: #10b981; }
.ec-m { color: #3b82f6; }
.ec-q { color: #f59e0b; }
.ec-h { color: #ef4444; }
.ec-option input:checked + .ec-badge {
    background: rgba(139,92,246,0.2);
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}
.ec-option small { font-size: 0.7rem; color: var(--text-hint); display: block; margin-top: 3px; }
.hint-text { font-size: 0.75rem; color: var(--text-hint); margin-top: 10px; }

/* ===== PREVIEW PANEL ===== */
.preview-sticky { position: sticky; top: 24px; }

.preview-card { text-align: center; }

.qr-preview-wrapper {
    display: flex;
    justify-content: center;
    margin: 16px 0;
}

.qr-frame {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    overflow: hidden;
    min-width: 260px;
    min-height: 260px;
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
}

#qr-canvas {
    display: block;
    border-radius: 12px;
    max-width: 100%;
    height: auto;
}

.qr-loading {
    position: absolute;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    background: rgba(15,15,26,0.8);
    border-radius: 20px;
}
.qr-loading.active { display: flex; }

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.qr-empty {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 30px;
}
.qr-empty span { font-size: 3rem; }
.qr-empty p { color: var(--text-hint); font-size: 0.9rem; text-align: center; }
.qr-empty.hidden { display: none; }

.qr-url-display {
    font-size: 0.8rem;
    color: var(--text-hint);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 100%;
    padding: 0 8px;
    margin-top: -8px;
    min-height: 18px;
}

/* ===== DOWNLOAD CARD ===== */
.download-card {}

.download-size-selector { margin-bottom: 16px; }

.size-options {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}
.size-option input { display: none; }
.size-option span {
    display: block;
    padding: 7px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}
.size-option input:checked + span {
    border-color: var(--accent);
    background: rgba(139,92,246,0.2);
    color: var(--accent);
}
.size-option span:hover { border-color: rgba(139,92,246,0.4); }

.download-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 12px;
}

.btn-download {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 14px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.04);
    color: var(--text);
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition);
    text-decoration: none;
}
.btn-download:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,0.3); }
.btn-download .btn-icon { font-size: 1.4rem; }
.btn-download span:not(.btn-icon) { font-size: 0.85rem; font-weight: 600; }
.btn-download small { font-size: 0.65rem; color: var(--text-hint); }

.btn-png { border-color: rgba(16,185,129,0.3); }
.btn-png:hover { background: rgba(16,185,129,0.15); border-color: #10b981; color: #10b981; }
.btn-jpg { border-color: rgba(245,158,11,0.3); }
.btn-jpg:hover { background: rgba(245,158,11,0.15); border-color: #f59e0b; color: #f59e0b; }
.btn-svg { border-color: rgba(99,102,241,0.3); }
.btn-svg:hover { background: rgba(99,102,241,0.15); border-color: #6366f1; color: #6366f1; }

.btn-copy {
    width: 100%;
    padding: 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.04);
    color: var(--text-muted);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.85rem;
    transition: all var(--transition);
}
.btn-copy:hover {
    background: rgba(139,92,246,0.15);
    border-color: var(--accent);
    color: var(--text);
}

/* ===== STATS ===== */
.stats-card { padding: 16px 20px; }
.stat {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}
.stat:last-child { border-bottom: none; padding-bottom: 0; }
.stat:first-child { padding-top: 0; }
.stat-icon { font-size: 1.5rem; flex-shrink: 0; }
.stat strong { display: block; font-size: 0.85rem; font-weight: 600; }
.stat small { font-size: 0.75rem; color: var(--text-hint); }

/* ===== ALERTS ===== */
.alert {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    margin-bottom: 14px;
}
.alert-error {
    background: rgba(239,68,68,0.1);
    border: 1px solid rgba(239,68,68,0.3);
    color: #f87171;
}

/* ===== TOAST ===== */
.toast {
    position: fixed;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%) translateY(80px);
    background: rgba(30,30,50,0.95);
    border: 1px solid var(--border);
    border-radius: 30px;
    color: var(--text);
    font-size: 0.9rem;
    padding: 12px 24px;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.35s ease;
    opacity: 0;
    z-index: 9999;
    white-space: nowrap;
}
.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ===== RESPONSIVE ===== */
@media (max-width: 600px) {
    .container { padding: 0 16px 60px; }
    .header { padding: 40px 16px 36px; }
    .dot-styles { grid-template-columns: repeat(2, 1fr); }
    .form-row { grid-template-columns: 1fr; }
    .ec-options { flex-wrap: wrap; }
    .download-buttons { grid-template-columns: repeat(3, 1fr); }
    .size-options { flex-wrap: wrap; }
}