/* DP Resizer - Unified Color System */
:root {
    /* Unified Color System - Professional Blue */
    --bg: #f8fafc;
    --bg-white: #ffffff;
    --text: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: rgba(37, 99, 235, 0.08);
    --accent: #3b82f6;
    --success: #16a34a;
    --border: #e2e8f0;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-lg: 0 12px 40px rgba(37, 99, 235, 0.12);
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }

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

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Header */
.header {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    padding: 14px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
}

.back-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: var(--bg);
    border-radius: var(--radius);
    color: var(--text);
    margin-right: 12px;
    transition: all 0.2s;
}

.back-btn:hover {
    background: var(--gradient);
    color: white;
    transform: translateX(-2px);
}

.back-btn svg { width: 20px; height: 20px; }

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-size: 20px;
    font-weight: 700;
}

.logo__icon { width: 28px; height: 28px; color: var(--primary); }
.logo__text { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.nav { display: flex; gap: 8px; }
.nav__link {
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s;
}

.nav__link:hover { background: var(--primary-light); color: var(--primary); }
.nav__link--active { background: var(--gradient); color: white; }

/* Pages */
.page { display: none !important; min-height: calc(100vh - 140px); }
.page.active { display: flex !important; flex-direction: column; }

/* Upload Page */
.upload-section {
    max-width: 700px;
    margin: 40px auto;
    text-align: center;
    padding: 40px 20px;
}

.upload-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 20px;
}

.badge-icon { font-size: 16px; }

.upload-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 8px;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.upload-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.upload-desc {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    line-height: 1.7;
}

.upload-desc strong { color: var(--text); }
.upload-desc .highlight { color: var(--primary); font-weight: 600; }

.dropzone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    transition: all 0.3s;
    background: var(--bg);
}

.dropzone:hover, .dropzone.drag-over {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: scale(1.01);
}

.dropzone-content { display: flex; flex-direction: column; align-items: center; }

.dropzone-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    color: var(--primary);
    opacity: 0.8;
}

.dropzone-icon svg { width: 100%; height: 100%; }

.upload-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    font-size: 16px;
    font-weight: 600;
    color: white;
    background: var(--gradient);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.upload-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.45);
}

.upload-btn svg { width: 20px; height: 20px; }

.upload-hint { margin-top: 16px; font-size: 14px; color: var(--text-muted); }
.upload-formats { margin-top: 8px; font-size: 12px; color: var(--text-muted); }

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 16px 8px;
    background: var(--bg);
    border-radius: var(--radius);
}

.feature-icon { font-size: 24px; }
.feature-text { font-size: 12px; font-weight: 600; color: var(--text-secondary); }

/* Platform Icons */
.platform-icons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 24px;
}

.platform-label { font-size: 13px; color: var(--text-muted); }

.platform-list {
    display: flex;
    gap: 8px;
}

.platform-list span {
    font-size: 24px;
    transition: transform 0.2s;
    cursor: default;
}

.platform-list span:hover { transform: scale(1.2); }

/* SEO Content */
.seo-content {
    max-width: 800px;
    margin: 40px auto;
    padding: 40px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.seo-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
}

.seo-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin: 24px 0 12px;
}

.seo-content p {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

/* Editor Page */
.editor {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 28px;
    max-width: 1200px;
    margin: 28px auto;
    padding: 0 20px;
}

.editor__preview {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid var(--border);
}

.preview-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    margin-bottom: 24px;
}

.preview-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

/* Mode Toggle */
.mode-toggle {
    display: flex;
    gap: 6px;
    padding: 4px;
    background: var(--bg);
    border-radius: var(--radius);
}

.mode-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: all 0.2s;
}

.mode-btn svg { width: 16px; height: 16px; }
.mode-btn:hover { color: var(--text); background: rgba(0,0,0,0.05); }
.mode-btn.active { color: white; background: var(--gradient); }

.preview-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    border-radius: var(--radius-lg);
    width: 100%;
}

.preview-container {
    position: relative;
    width: 320px;
    height: 320px;
    border-radius: 50%;
    overflow: hidden;
    background: #ffffff;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12), 0 0 0 4px rgba(99, 102, 241, 0.2);
}

.preview-container img {
    position: absolute;
    cursor: move;
    user-select: none;
    -webkit-user-drag: none;
    transform-origin: center center;
    left: 50%;
    top: 50%;
}

.crop-overlay {
    position: absolute;
    inset: 0;
    border: 3px solid var(--primary);
    border-radius: 50%;
    pointer-events: none;
    box-shadow: 0 0 0 2000px rgba(0,0,0,0.25);
}

.preview-info {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    padding: 10px 20px;
    background: var(--bg);
    border-radius: 50px;
}

.info-platform {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}

.info-size {
    font-size: 13px;
    color: var(--text-secondary);
    padding-left: 12px;
    border-left: 1px solid var(--border);
}

/* Zoom Controls */
.zoom-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 20px;
    padding: 12px 20px;
    background: var(--bg);
    border-radius: var(--radius);
    width: 100%;
    max-width: 400px;
}

.zoom-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    transition: all 0.2s;
}

.zoom-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.zoom-btn svg { width: 18px; height: 18px; }

.zoom-controls input[type="range"] {
    flex: 1;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

.zoom-controls input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(99, 102, 241, 0.4);
}

.zoom-value {
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    min-width: 45px;
    text-align: right;
}

.drag-hint {
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-muted);
}

/* Controls Panel */
.editor__controls {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    border: 1px solid var(--border);
    height: fit-content;
}

.controls-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text);
}

.controls-title svg { width: 22px; height: 22px; color: var(--primary); }

/* Platform Grid */
.platform-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-bottom: 24px;
}

.platform-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
}

.platform-btn:hover {
    border-color: var(--primary);
    background: var(--primary-light);
    transform: translateY(-1px);
}

.platform-btn.active {
    border-color: var(--primary);
    background: var(--primary-light);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.platform-icon { font-size: 28px; }

.platform-info { display: flex; flex-direction: column; align-items: flex-start; }
.platform-name { font-size: 14px; font-weight: 600; color: var(--text); }
.platform-size { font-size: 11px; color: var(--text-muted); margin-top: 2px; }

/* Custom Size */
.custom-size {
    margin-bottom: 24px;
    padding: 16px;
    background: var(--bg);
    border-radius: var(--radius);
}

.custom-size label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text);
}

.size-input-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.size-input-group input {
    flex: 1;
    padding: 12px;
    font-size: 14px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    text-align: center;
    background: var(--bg-white);
}

.size-input-group input:focus { outline: none; border-color: var(--primary); }
.size-x { font-weight: 600; color: var(--text-muted); }
.size-unit { font-size: 13px; color: var(--text-muted); }
.size-hint { margin-top: 10px; font-size: 12px; color: var(--text-muted); }

/* Action Buttons */
.action-buttons { display: flex; flex-direction: column; gap: 12px; }

.create-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 18px;
    font-size: 16px;
    font-weight: 600;
    color: white;
    background: var(--gradient);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.create-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.45);
}

.create-btn svg { width: 20px; height: 20px; }

.reset-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg);
    border-radius: var(--radius);
    transition: all 0.2s;
}

.reset-btn:hover { color: var(--text); background: #e2e8f0; }
.reset-btn svg { width: 16px; height: 16px; }

/* Download Page */
.download-section {
    max-width: 520px;
    margin: 40px auto;
    text-align: center;
    padding: 48px 40px;
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.success-animation {
    margin-bottom: 24px;
}

.checkmark {
    width: 80px;
    height: 80px;
    color: var(--success);
}

.checkmark circle {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    animation: drawCircle 0.6s ease forwards;
}

.checkmark .check {
    stroke-dasharray: 50;
    stroke-dashoffset: 50;
    animation: drawCheck 0.4s ease 0.4s forwards;
}

@keyframes drawCircle {
    to { stroke-dashoffset: 0; }
}

@keyframes drawCheck {
    to { stroke-dashoffset: 0; }
}

.download-title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text);
}

.download-info {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 28px;
}

.result-preview {
    width: 180px;
    height: 180px;
    margin: 0 auto 28px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12), 0 0 0 4px rgba(99, 102, 241, 0.2);
}

.result-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 18px 48px;
    font-size: 16px;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.45);
}

.download-btn svg { width: 20px; height: 20px; }

/* Share Section */
.share-section {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.share-label { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; }
.share-buttons { display: flex; justify-content: center; gap: 12px; }

.share-btn {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.share-btn svg { width: 22px; height: 22px; }
.share-btn--whatsapp { background: #25D366; color: white; }
.share-btn--facebook { background: #1877F2; color: white; }
.share-btn--twitter { background: #1DA1F2; color: white; }
.share-btn--copy { background: var(--bg); color: var(--text); border: 2px solid var(--border); }
.share-btn:hover { transform: scale(1.1); }

.more-btn {
    margin-top: 24px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    background: none;
    border: 2px solid var(--primary);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s;
}

.more-btn:hover { background: var(--primary); color: white; }
.more-btn svg { width: 16px; height: 16px; }

/* Footer */
.footer {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    color: white;
    padding: 40px 20px;
    margin-top: auto;
}

.footer__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    text-align: center;
}

.footer__logo {
    font-size: 20px;
    font-weight: 700;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer__tagline { font-size: 14px; color: #94a3b8; }

.footer__links {
    display: flex;
    gap: 24px;
    margin: 16px 0;
}

.footer__links a {
    font-size: 14px;
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.2s;
}

.footer__links a:hover { color: white; }

.footer__copy { font-size: 13px; color: #64748b; }

/* Responsive */
@media (max-width: 1000px) {
    .editor { grid-template-columns: 1fr; }
    .preview-container { width: 280px; height: 280px; }
}

@media (max-width: 700px) {
    .upload-section { margin: 20px; padding: 32px 24px; }
    .upload-title { font-size: 24px; }
    .upload-subtitle { font-size: 16px; }
    .nav { display: none; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .platform-grid { grid-template-columns: 1fr; }
    .preview-container { width: 240px; height: 240px; }
    .seo-content { margin: 20px; padding: 24px; }
    .download-section { margin: 20px; padding: 32px 24px; }
    .footer__links { flex-wrap: wrap; justify-content: center; }
}

@media (max-width: 400px) {
    .features-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
    .feature-item { padding: 12px 6px; }
    .preview-container { width: 200px; height: 200px; }
    .mode-toggle { flex-direction: column; gap: 4px; }
    .mode-btn { justify-content: center; }
}