@font-face {
    font-family: 'Roboto';
    src: url('../fonts/Roboto.ttf') format('truetype');
    font-weight: normal;
}
@font-face {
    font-family: 'Roboto';
    src: url('../fonts/Roboto-Bold.ttf') format('truetype');
    font-weight: bold;
}
@font-face {
    font-family: 'OpenSans';
    src: url('../fonts/OpenSans.ttf') format('truetype');
    font-weight: normal;
}
@font-face {
    font-family: 'OpenSans';
    src: url('../fonts/OpenSans-Bold.ttf') format('truetype');
    font-weight: bold;
}
@font-face {
    font-family: 'Lato';
    src: url('../fonts/Lato.ttf') format('truetype');
    font-weight: normal;
}
@font-face {
    font-family: 'Lato';
    src: url('../fonts/Lato-Bold.ttf') format('truetype');
    font-weight: bold;
}
@font-face {
    font-family: 'Montserrat';
    src: url('../fonts/Montserrat.ttf') format('truetype');
    font-weight: normal;
}
@font-face {
    font-family: 'Montserrat';
    src: url('../fonts/Montserrat-Bold.ttf') format('truetype');
    font-weight: bold;
}
@font-face {
    font-family: 'Oswald';
    src: url('../fonts/Oswald.ttf') format('truetype');
    font-weight: normal;
}
@font-face {
    font-family: 'Oswald';
    src: url('../fonts/Oswald-Bold.ttf') format('truetype');
    font-weight: bold;
}

:root {
    --primary-color: #007AFF;
    --background: #FFFFFF;
    --card-bg: #F8F9FA;
    --text-main: #1D1D1F;
    --text-secondary: #86868B;
    --border-color: #D2D2D7;
    --success-color: #34C759;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --radius: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

header h1 {
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 5px;
}

header p {
    color: var(--text-secondary);
    font-size: 16px;
}

.settings-panel {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.setting-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.setting-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
}

.compression-profiles {
    display: flex;
    gap: 8px;
}

.profile-btn {
    flex: 1;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #ffffff;
    color: var(--text-main);
    font-size: 13px;
    font-weight: 600;
    padding: 8px 10px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.profile-btn:hover {
    border-color: #8bbef5;
    background: #f3f8ff;
}

.profile-btn.active {
    border-color: var(--primary-color);
    background: #e9f3ff;
    color: #005fca;
}

.inline-check {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 500;
}

.input-field {
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    background-color: var(--background);
    color: var(--text-main);
    transition: all 0.2s ease;
    width: 100%;
    outline: none;
}

.input-field:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.2);
}

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

.dimensions-input span {
    font-weight: bold;
    color: var(--text-secondary);
}

.watermark-toggle {
    flex-direction: row;
    align-items: center;
    grid-column: 1 / -1;
    margin-top: 10px;
}

.watermark-toggle label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 16px;
}

.watermark-settings {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.color-picker {
    width: 100%;
    height: 40px;
    padding: 2px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
}

.hidden {
    display: none !important;
}

.help-text {
    grid-column: 1 / -1;
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 5px;
}

.preview-container {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

.preview-container h3 {
    margin-bottom: 10px;
    font-size: 16px;
}

.preview-wrapper {
    position: relative;
    width: 100%;
    max-height: 400px;
    overflow: hidden;
    border-radius: 8px;
    background-color: #e5e5ea;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px dashed var(--border-color);
}

.preview-wrapper img {
    max-width: 100%;
    max-height: 400px;
    display: block;
    object-fit: contain;
}

.preview-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 38px;
    height: 38px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.85);
    background: rgba(20, 31, 48, 0.65);
    color: #ffffff;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    z-index: 3;
}

.preview-nav-left {
    left: 10px;
}

.preview-nav-right {
    right: 10px;
}

.preview-nav:hover {
    background: rgba(20, 31, 48, 0.85);
}

.preview-counter {
    margin-top: 10px;
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
}

.watermark-drag {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    cursor: move;
    user-select: none;
    white-space: nowrap;
    font-weight: normal;
    padding: 5px;
    border: 1px dashed transparent;
}

.watermark-drag:hover {
    border-color: rgba(255, 255, 255, 0.8);
    background-color: rgba(0, 0, 0, 0.2);
}

.upload-section {
    background-color: var(--card-bg);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 30px 40px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    margin-bottom: 20px;
}

.upload-section:hover, .upload-section.drag-over {
    border-color: var(--primary-color);
    background-color: #F0F7FF;
}

.upload-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.upload-section h2 {
    font-size: 20px;
    margin-bottom: 5px;
}

.upload-section p {
    color: var(--text-secondary);
}

.file-input {
    display: none;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background-color: #0063CC;
}

.btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.batch-actions {
    text-align: center;
    margin-top: 10px;
}

.explain-trigger-wrap {
    text-align: center;
    margin-bottom: 20px;
}

body.modal-open {
    overflow: hidden;
}

.explain-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(13, 24, 38, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.explain-modal-card {
    position: relative;
    width: min(860px, 96vw);
    max-height: 90vh;
    overflow-y: auto;
    border-radius: 14px;
    box-shadow: 0 22px 40px rgba(10, 30, 50, 0.28);
}

.explain-close {
    position: absolute;
    top: 10px;
    right: 12px;
    z-index: 2;
    width: 34px;
    height: 34px;
    border-radius: 999px;
    border: 1px solid #bfd8f7;
    background: #ffffff;
    color: #1d3d68;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
}

.explain-modal .explain-section {
    margin: 0;
}

.history-section {
    margin-top: 20px;
}

.explain-section {
    margin-top: 18px;
    margin-bottom: 24px;
    padding: 22px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    background:
        radial-gradient(circle at 15% 20%, #eef6ff 0%, #eef6ff 24%, transparent 25%),
        linear-gradient(150deg, #f9fbff 0%, #f4f9ff 50%, #f8f9fa 100%);
}

.explain-section h3 {
    font-size: 20px;
    margin-bottom: 4px;
}

.explain-subtitle {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 14px;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.process-step {
    position: relative;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px;
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.process-step:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(0, 122, 255, 0.12);
}

.step-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: #007AFF;
    color: #fff;
    font-size: 13px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 999px;
    background: #e9f3ff;
    color: #005fca;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 8px;
}

.process-step h4 {
    font-size: 16px;
    margin-bottom: 5px;
}

.process-step p {
    font-size: 13px;
    color: var(--text-secondary);
}

.flow-legend {
    margin-top: 14px;
    border-top: 1px dashed #bfd8f7;
    padding-top: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 13px;
    color: #1d3d68;
    font-weight: 600;
}

.flow-arrow {
    color: #007AFF;
    font-size: 16px;
}

@media (max-width: 600px) {
    .process-grid {
        grid-template-columns: 1fr;
    }

    .explain-section {
        padding: 16px;
    }

    .explain-modal {
        padding: 10px;
    }

    .explain-close {
        top: 8px;
        right: 8px;
    }
}

.history-section h3 {
    font-size: 18px;
    margin-bottom: 15px;
    font-weight: 600;
}

.history-list {
    display: grid;
    gap: 10px;
}

.history-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 10px 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-info h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.item-info span {
    color: var(--text-secondary);
    font-size: 13px;
}

.download-link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
}

.history-link:hover {
    text-decoration: underline;
}

footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

footer p {
    color: var(--text-secondary);
    font-size: 14px;
}

#total-count {
    font-weight: 700;
    color: var(--text-main);
}

/* Animaties */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease forwards;
}