/* ========================================
   Halftone Generator - Studio Kenzo
   Matching the brand aesthetic
   ======================================== */

/* ===========================
   CSS Variables (Studio Kenzo Brand)
   =========================== */
:root {
    --deep-blue: #1f01ba;
    --bright-red: #fc0605;
    --yellow: #ffd200;
    --green: #079100;
    --light-blue: #b6d8f7;
    --pink: #fdbed8;
    --cream: #faf8f5;
    --dark: #1a1a1a;
    --white: #ffffff;
    --black: #000000;
}

/* ===========================
   Base Styles
   =========================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Bitter", serif;
    background: var(--cream);
    color: var(--black);
    line-height: 1.5;
    min-height: 100vh;
}

/* ===========================
   Navigation
   =========================== */
body > nav {
    position: sticky;
    top: 0;
    padding: 15px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 200;
    background: var(--pink);
}

body > nav a {
    color: var(--black);
    text-decoration: none;
    font-size: 0.9rem;
}

.nav-logo {
    font-family: "Boldonse", sans-serif;
    font-size: 1.2rem;
    font-weight: 400;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 40px;
    align-items: center;
}

.nav-links > a,
.nav-links .nav-dropdown > a {
    font-family: "Boldonse", sans-serif;
    font-size: 0.85rem;
    text-transform: uppercase;
    transition: opacity 0.3s ease;
}

.nav-links > a:hover,
.nav-links .nav-dropdown > a:hover {
    opacity: 0.6;
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown > a {
    cursor: pointer;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) rotateX(-90deg) scale(0.8);
    transform-origin: top center;
    background: var(--white);
    min-width: 180px;
    padding: 12px 0;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    margin-top: 15px;
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 16px;
    height: 16px;
    background: var(--white);
    border-radius: 3px 0 0 0;
}

.nav-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) rotateX(0deg) scale(1);
}

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    font-family: "Bitter", serif;
    font-size: 0.9rem;
    color: var(--black);
    text-transform: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.dropdown-menu a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 100%;
    background: var(--deep-blue);
    transform: scaleY(0);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.dropdown-menu a:hover {
    background: var(--cream);
    padding-left: 28px;
}

.dropdown-menu a:hover::before {
    transform: scaleY(1);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    cursor: pointer;
    position: relative;
    z-index: 200;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--black);
    margin: 3px 0;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform-origin: center;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--pink);
    z-index: 150;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform: scale(0.95);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
}

.mobile-menu-main {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.mobile-menu-main a {
    font-family: "Boldonse", sans-serif;
    font-size: 1.8rem;
    text-transform: uppercase;
    color: var(--black);
    text-decoration: none;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s ease;
}

.mobile-menu.active .mobile-menu-main a {
    opacity: 1;
    transform: translateY(0);
}

.mobile-menu.active .mobile-menu-main a:nth-child(1) { transition-delay: 0.1s; }
.mobile-menu.active .mobile-menu-main a:nth-child(2) { transition-delay: 0.15s; }
.mobile-menu.active .mobile-menu-main a:nth-child(3) { transition-delay: 0.2s; }
.mobile-menu.active .mobile-menu-main a:nth-child(4) { transition-delay: 0.25s; }
.mobile-menu.active .mobile-menu-main a:nth-child(5) { transition-delay: 0.3s; }
.mobile-menu.active .mobile-menu-main a:nth-child(6) { transition-delay: 0.35s; }

.mobile-menu-main a:hover {
    opacity: 0.6;
}

/* ===========================
   Main Content
   =========================== */
main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 30px 60px;
}

.tool-header {
    text-align: center;
    margin-bottom: 40px;
}

.tool-header h1 {
    font-family: "Boldonse", sans-serif;
    font-size: clamp(1.8rem, 5vw, 2.8rem);
    text-transform: uppercase;
    margin-bottom: 15px;
    line-height: 1.2;
}

.tool-header p {
    font-size: 1.1rem;
    opacity: 0.75;
    max-width: 550px;
    margin: 0 auto;
}

/* ===========================
   App Container (Two-Column Layout)
   =========================== */
.app-container {
    display: flex;
    gap: 30px;
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    min-height: 600px;
}

/* ===========================
   Controls Panel
   =========================== */
.controls-panel {
    width: 300px;
    min-width: 300px;
    background: var(--white);
    border-right: 1px solid rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
}

/* Tab Navigation */
.tabs-nav {
    display: flex;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    background: var(--cream);
    flex-shrink: 0;
}

.tab-btn {
    flex: 1;
    padding: 14px 8px;
    background: transparent;
    border: none;
    cursor: pointer;
    font-family: "Boldonse", sans-serif;
    font-size: 0.6rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: rgba(0, 0, 0, 0.4);
    transition: all 0.2s ease;
    position: relative;
}

.tab-btn:hover {
    color: rgba(0, 0, 0, 0.7);
    background: rgba(0, 0, 0, 0.03);
}

.tab-btn.active {
    color: var(--deep-blue);
    background: var(--white);
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--deep-blue);
}

/* Tab Content */
.tabs-content {
    flex: 1;
    overflow-y: auto;
}

.tab-panel {
    display: none;
    padding: 20px;
}

.tab-panel.active {
    display: block;
}

.controls-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 25px;
}

/* Control Sections (legacy - kept for compatibility) */
.control-section {
    margin-bottom: 25px;
    padding-bottom: 25px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.control-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.section-title {
    font-family: "Boldonse", sans-serif;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--black);
    margin-bottom: 15px;
    opacity: 0.6;
}

/* Control Groups */
.control-group {
    margin-bottom: 15px;
}

.control-group:last-child {
    margin-bottom: 0;
}

.control-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--black);
    margin-bottom: 8px;
}

.value-display {
    font-family: "Bitter", serif;
    font-size: 0.8rem;
    color: var(--black);
    opacity: 0.5;
    background: var(--cream);
    padding: 2px 8px;
    border-radius: 4px;
}

/* Select Input */
.select-input {
    width: 100%;
    padding: 10px 14px;
    background: var(--cream);
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    color: var(--black);
    font-family: "Bitter", serif;
    font-size: 0.9rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%231a1a1a' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    transition: border-color 0.3s ease;
}

.select-input:hover {
    border-color: rgba(0, 0, 0, 0.2);
}

.select-input:focus {
    outline: none;
    border-color: var(--deep-blue);
}

/* Range Slider */
.range-slider {
    width: 100%;
    height: 6px;
    background: var(--cream);
    border-radius: 3px;
    appearance: none;
    cursor: pointer;
}

.range-slider::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--deep-blue);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.range-slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
    box-shadow: 0 0 0 4px rgba(31, 1, 186, 0.15);
}

.range-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--deep-blue);
    border: none;
    border-radius: 50%;
    cursor: pointer;
}

.range-slider:focus {
    outline: none;
}

.range-slider:focus::-webkit-slider-thumb {
    box-shadow: 0 0 0 4px rgba(31, 1, 186, 0.2);
}

/* Color Input */
.color-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.color-group {
    margin-bottom: 0 !important;
}

.color-input-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--cream);
    border: 2px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    padding: 6px;
    transition: border-color 0.3s ease;
}

.color-input-wrapper:hover {
    border-color: rgba(0, 0, 0, 0.2);
}

.color-input {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    padding: 0;
}

.color-input::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input::-webkit-color-swatch {
    border: none;
    border-radius: 4px;
}

.color-hex {
    font-family: "Bitter", serif;
    font-size: 0.75rem;
    color: var(--black);
    opacity: 0.6;
    text-transform: uppercase;
}

/* Color Presets */
.color-presets {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.color-preset {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    border: 2px solid rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    position: relative;
    overflow: hidden;
}

.color-preset:hover {
    transform: scale(1.1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.color-preset[data-ink="#000000"][data-paper="#ffffff"] {
    background: linear-gradient(135deg, #000 50%, #fff 50%);
}

.color-preset[data-ink="#1f01ba"][data-paper="#faf8f5"] {
    background: linear-gradient(135deg, #1f01ba 50%, #faf8f5 50%);
}

.color-preset[data-ink="#fc0605"][data-paper="#ffd200"] {
    background: linear-gradient(135deg, #fc0605 50%, #ffd200 50%);
}

.color-preset[data-ink="#079100"][data-paper="#faf8f5"] {
    background: linear-gradient(135deg, #079100 50%, #faf8f5 50%);
}

.color-preset[data-ink="#1a1a1a"][data-paper="#fdbed8"] {
    background: linear-gradient(135deg, #1a1a1a 50%, #fdbed8 50%);
}

.color-preset[data-ink="#1f01ba"][data-paper="#b6d8f7"] {
    background: linear-gradient(135deg, #1f01ba 50%, #b6d8f7 50%);
}

/* Toggle Button */
.toggle-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toggle-group label {
    margin-bottom: 0;
}

.toggle-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.toggle-track {
    display: block;
    width: 44px;
    height: 24px;
    background: var(--cream);
    border: 2px solid rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    position: relative;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.toggle-thumb {
    display: block;
    width: 16px;
    height: 16px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

.toggle-button[aria-pressed="true"] .toggle-track {
    background: var(--deep-blue);
    border-color: var(--deep-blue);
}

.toggle-button[aria-pressed="true"] .toggle-thumb {
    transform: translateX(20px);
    background: white;
}

/* Texture Controls */
.texture-controls {
    display: none;
    margin-top: 15px;
}

.texture-controls.visible {
    display: block;
}

/* Actions Section */
.actions-section {
    position: sticky;
    bottom: 0;
    background: var(--white);
    padding: 20px;
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: 10px;
    border-bottom: none !important;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    font-family: "Boldonse", sans-serif;
    font-size: 0.8rem;
    text-transform: uppercase;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background: #2d12d4;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(31, 1, 186, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--black);
    border: 2px solid rgba(0, 0, 0, 0.2);
}

.btn-secondary:hover:not(:disabled) {
    border-color: var(--black);
}

/* ===========================
   Preview Area
   =========================== */
.preview-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--cream);
    position: relative;
    overflow: hidden;
    min-height: 400px;
}

/* Upload Zone */
.upload-zone {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    cursor: pointer;
    transition: background-color 0.3s ease;
    border: 3px dashed rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    margin: 20px;
}

/* When upload zone is hidden via JS style="display: none" */
.upload-zone[style*="display: none"] {
    display: none !important;
}

.upload-zone:hover {
    border-color: var(--deep-blue);
    background: rgba(31, 1, 186, 0.03);
}

.upload-zone.drag-over {
    border-color: var(--deep-blue);
    background: rgba(31, 1, 186, 0.05);
}

.upload-zone.drag-over .upload-icon {
    color: var(--deep-blue);
    transform: scale(1.1);
}

.upload-content {
    text-align: center;
    max-width: 400px;
}

.upload-icon {
    width: 60px;
    height: 60px;
    color: var(--black);
    opacity: 0.4;
    margin: 0 auto 20px;
    transition: transform 0.3s ease, color 0.3s ease, opacity 0.3s ease;
}

.upload-title {
    font-family: "Boldonse", sans-serif;
    font-size: 1.2rem;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.upload-text {
    color: var(--black);
    opacity: 0.6;
    margin-bottom: 20px;
}

.upload-button {
    display: inline-block;
    padding: 12px 24px;
    background: var(--black);
    color: var(--white);
    font-family: "Boldonse", sans-serif;
    font-size: 0.85rem;
    text-transform: uppercase;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-button:hover {
    background: var(--deep-blue);
    transform: translateY(-2px);
}

.upload-formats {
    margin-top: 15px;
    font-size: 0.8rem;
    color: var(--black);
    opacity: 0.4;
}

/* ===========================
   Canvas Container
   =========================== */
.canvas-container {
    flex: 1;
    display: none;
    flex-direction: column;
    padding: 20px;
}

.canvas-container[style*="display: flex"] {
    display: flex !important;
}

.canvas-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.view-toggle {
    display: flex;
    background: var(--white);
    border-radius: 8px;
    padding: 4px;
    gap: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.view-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--black);
    opacity: 0.4;
    cursor: pointer;
    transition: all 0.3s ease;
}

.view-btn:hover {
    opacity: 0.7;
    background: var(--cream);
}

.view-btn.active {
    opacity: 1;
    background: var(--cream);
}

.change-image-btn {
    padding: 10px 16px;
    background: var(--white);
    border: 2px solid rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    color: var(--black);
    font-family: "Bitter", serif;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.change-image-btn:hover {
    border-color: var(--deep-blue);
    color: var(--deep-blue);
}

/* Canvas Wrapper */
.canvas-wrapper {
    flex: 1;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    overflow: hidden;
    padding-top: 10px;
}

.canvas-pair {
    display: flex;
    gap: 20px;
    max-width: 100%;
}

.canvas-pair.single-view .original-box {
    display: none;
}

.canvas-pair.single-view .processed-box canvas {
    max-height: 600px;
    max-width: 100%;
}

.canvas-box {
    position: relative;
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.canvas-label {
    position: absolute;
    top: 10px;
    left: 10px;
    font-family: "Boldonse", sans-serif;
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--black);
    opacity: 0.5;
    background: rgba(255, 255, 255, 0.9);
    padding: 4px 10px;
    border-radius: 4px;
    z-index: 10;
}

.canvas-box canvas {
    display: block;
    max-width: 100%;
    max-height: 450px;
    object-fit: contain;
}

/* Processing Indicator */
.processing-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    background: rgba(255, 255, 255, 0.95);
    padding: 30px 40px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 50;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--cream);
    border-top-color: var(--deep-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: var(--white);
    border-radius: 16px;
    padding: 40px;
    max-width: 400px;
    text-align: center;
}

.modal-content h3 {
    font-family: "Boldonse", sans-serif;
    font-size: 1.2rem;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.modal-content p {
    color: var(--black);
    opacity: 0.7;
    margin-bottom: 25px;
}

/* ===========================
   CTA Section
   =========================== */
.cta-section {
    margin-top: 50px;
    text-align: center;
    padding: 40px 30px;
    background: var(--deep-blue);
    border-radius: 12px;
    color: var(--white);
}

.cta-section h2 {
    font-family: "Boldonse", sans-serif;
    font-size: 1.3rem;
    text-transform: uppercase;
    margin-bottom: 10px;
    letter-spacing: 0.07em;
}

.cta-section p {
    opacity: 0.8;
    margin-bottom: 20px;
}

.cta-button {
    display: inline-block;
    padding: 14px 28px;
    background: var(--white);
    color: var(--deep-blue);
    font-family: "Boldonse", sans-serif;
    font-size: 0.9rem;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* ===========================
   Footer
   =========================== */
.footer-cta {
    padding: 120px 40px 90px;
    text-align: left;
    background: var(--white);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    margin-top: 60px;
}

.newsletter-tagline {
    font-family: "Bitter", serif;
    font-style: normal;
    font-size: 44px;
    font-weight: 400;
    line-height: 58.24px;
    letter-spacing: normal;
    max-width: 700px;
    margin: 0 0 20px;
    color: var(--black);
}

.newsletter-form {
    display: flex;
    gap: 0;
    max-width: 450px;
}

.newsletter-form input[type="email"] {
    flex: 1;
    padding: 16px 20px;
    font-family: "Bitter", serif;
    font-size: 1rem;
    border: 2px solid var(--black);
    border-right: none;
    border-radius: 30px 0 0 30px;
    outline: none;
    transition: border-color 0.3s ease;
}

.newsletter-form input[type="email"]:focus {
    border-color: var(--deep-blue);
}

.newsletter-form input[type="email"]::placeholder {
    color: #999;
}

.newsletter-form button {
    padding: 16px 28px;
    background: var(--black);
    color: var(--white);
    font-family: "Boldonse", sans-serif;
    font-size: 0.85rem;
    text-transform: uppercase;
    border: 2px solid var(--black);
    border-radius: 0 30px 30px 0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.newsletter-form button:hover {
    background: var(--deep-blue);
    border-color: var(--deep-blue);
}

.newsletter-status {
    margin-top: 12px;
    font-family: "Bitter", serif;
    font-size: 0.9rem;
}

.newsletter-status.success {
    color: var(--green);
}

.newsletter-status.error {
    color: var(--bright-red);
}

.footer-main {
    padding: 20px 40px;
    background: var(--white);
    display: flex;
    justify-content: flex-start;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.15);
    color: var(--black);
    transition: all 0.3s ease;
}

.footer-social a:hover {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.footer-social svg {
    width: 18px;
    height: 18px;
}

.footer-bottom {
    padding: 20px 40px;
    background: var(--white);
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-copy {
    font-size: 0.85rem;
    opacity: 0.6;
}

.footer-copy span {
    color: var(--bright-red);
}

.footer-legal {
    display: flex;
    gap: 25px;
}

.footer-legal a {
    font-size: 0.85rem;
    color: var(--black);
    text-decoration: none;
    opacity: 0.6;
    transition: opacity 0.3s ease;
}

.footer-legal a:hover {
    opacity: 1;
}

/* ===========================
   Pattern-Specific Controls
   =========================== */
#pattern-specific-controls {
    display: none;
}

#pattern-specific-controls.visible {
    display: block;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 1024px) {
    .app-container {
        flex-direction: column-reverse;
    }

    .controls-panel {
        width: 100%;
        min-width: 100%;
        border-right: none;
        border-bottom: 1px solid rgba(0, 0, 0, 0.08);
        max-height: none;
    }

    .controls-scroll {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .control-section {
        margin-bottom: 0;
        padding-bottom: 0;
        border-bottom: none;
    }

    .actions-section {
        grid-column: 1 / -1;
        flex-direction: row;
        justify-content: center;
        padding: 20px;
    }

    .actions-section .btn {
        flex: 1;
        max-width: 200px;
    }

    .preview-area {
        min-height: 400px;
    }
}

@media (max-width: 768px) {
    nav {
        padding: 15px 20px;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    main {
        padding: 30px 20px 50px;
    }

    .controls-scroll {
        grid-template-columns: 1fr;
        padding: 20px;
    }

    .actions-section {
        flex-direction: column;
        padding: 20px;
    }

    .actions-section .btn {
        width: 100%;
        max-width: none;
    }

    .controls-panel {
        border-top: 1px solid rgba(0, 0, 0, 0.08);
        border-bottom: none;
    }

    .tabs-nav {
        background: var(--white);
        border-bottom: 2px solid var(--cream);
        padding: 0 10px;
    }

    .tab-btn {
        padding: 16px 12px;
        font-size: 0.7rem;
        border-bottom: 2px solid transparent;
        margin-bottom: -2px;
    }

    .tab-btn.active {
        background: var(--white);
        border-bottom-color: var(--deep-blue);
    }

    .tab-btn.active::after {
        display: none;
    }

    .canvas-pair {
        flex-direction: column;
    }

    .canvas-box canvas {
        max-height: 300px;
    }

    .footer-cta {
        padding: 60px 20px 30px;
    }

    .newsletter-tagline {
        font-size: 28px;
        line-height: 38px;
    }

    .newsletter-form {
        flex-direction: column;
        gap: 12px;
    }

    .newsletter-form input[type="email"] {
        border-right: 2px solid var(--black);
        border-radius: 30px;
    }

    .newsletter-form button {
        border-radius: 30px;
    }

    .footer-main {
        padding: 15px 20px 40px;
        flex-direction: column;
        align-items: flex-start;
    }

    .footer-bottom {
        padding: 20px;
        flex-direction: column;
        text-align: center;
    }

    .footer-legal {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .tool-header h1 {
        font-size: 1.5rem;
    }

    .color-controls {
        grid-template-columns: 1fr;
    }

    .upload-zone {
        padding: 30px 20px;
        margin: 15px;
    }
}

/* ===========================
   Scrollbar Styling
   =========================== */
.controls-scroll::-webkit-scrollbar {
    width: 6px;
}

.controls-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.controls-scroll::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 3px;
}

.controls-scroll::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.25);
}

/* ===========================
   Focus Styles
   =========================== */
:focus-visible {
    outline: 2px solid var(--deep-blue);
    outline-offset: 2px;
}

/* ===========================
   Selection
   =========================== */
::selection {
    background: var(--deep-blue);
    color: white;
}