/* ==========================================================================
   Theme tokens
   ========================================================================== */
:root {
    --primary: #3b82f6;
    --primary-dark: #2563eb;
    --primary-tint: #eff6ff;
    --accent: #10b981;
    --accent-dark: #059669;
    --accent-tint: #ecfdf5;
    --ink: #1e293b;
    --muted: #64748b;
    --border: #e2e8f0;
    --bg: #eef1f6;
    --card-bg: #ffffff;
}

/* ==========================================================================
   General
   ========================================================================== */
body {
    background-color: var(--bg);
    color: var(--ink);
    font-size: 14px;
    line-height: 1.5;
}

.container-fluid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.25rem;
}

/* Header */
h1 {
    color: var(--ink);
    font-weight: 700;
    margin-bottom: 1.75rem;
    position: relative;
    padding-bottom: 12px;
}

h1:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    border-radius: 3px;
    background: linear-gradient(to right, var(--primary), var(--accent));
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
    border: none;
    border-radius: 12px;
    background: var(--card-bg);
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
    margin-bottom: 1rem;
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.1);
}

.card-header {
    background: linear-gradient(135deg, #f8fafc 0%, #eef1f6 100%);
    border-bottom: 1px solid var(--border);
    border-radius: 12px 12px 0 0 !important;
    padding: 0.85rem 1.25rem;
}

.card-header h5 {
    margin: 0;
    color: var(--ink);
    font-weight: 600;
    font-size: 0.95rem;
}

.card-header h5 i {
    color: var(--primary);
}

.card-body {
    padding: 1.1rem 1.25rem;
}

/* ==========================================================================
   Accordion (Text & Font / Effects / Logos)
   ========================================================================== */
.accordion-item {
    border: none;
    border-radius: 12px !important;
    overflow: hidden;
    margin-bottom: 0.65rem;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
}

.accordion-item:last-child {
    margin-bottom: 0;
}

.accordion-header {
    margin: 0;
}

.accordion-button {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--ink);
    background: var(--card-bg);
    padding: 0.85rem 1.25rem;
}

.accordion-button i {
    color: var(--primary);
    width: 1.1em;
}

.accordion-button:not(.collapsed) {
    color: var(--primary-dark);
    background: linear-gradient(135deg, var(--primary-tint) 0%, var(--accent-tint) 100%);
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.2);
}

.accordion-body {
    padding: 1.1rem 1.25rem;
    background: var(--card-bg);
}

/* ==========================================================================
   Form Controls
   ========================================================================== */
.form-control, .form-select {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    font-size: 0.88rem;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.15);
}

.form-label {
    font-weight: 600;
    color: var(--ink);
    font-size: 0.85rem;
    margin-bottom: 0.35rem;
}

.form-text {
    color: var(--muted);
    font-size: 0.78rem;
    margin-top: 0.3rem;
}

textarea.form-control {
    resize: vertical;
    min-height: 60px;
}

/* Range Inputs */
.form-range {
    height: 1.4rem;
    padding: 0.4rem 0;
}

.form-range::-webkit-slider-thumb {
    background: var(--primary);
    transition: transform 0.1s;
}

.form-range::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

.form-range::-moz-range-thumb {
    background: var(--primary);
}

#fontSizeValue {
    font-size: 0.8rem;
    color: var(--muted);
    text-align: center;
    font-weight: 600;
    margin-top: 0.25rem;
}

/* Checkboxes / radios */
.form-check-input {
    width: 1.15em;
    height: 1.15em;
    margin-top: 0.15em;
    cursor: pointer;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.form-check-label {
    cursor: pointer;
    user-select: none;
    font-size: 0.88rem;
}

.form-check-inline {
    margin-right: 1.5rem;
}

/* ==========================================================================
   Logo variant boxes (18+ Logo / Custom Logo)
   ========================================================================== */
.logo-variant-box {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.9rem;
}

.logo-variant-box + .logo-variant-box {
    margin-top: 0.75rem;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.88rem;
    transition: all 0.15s ease;
}

.btn-lg {
    font-size: 1rem;
    padding: 0.75rem 1.25rem;
}

.btn-sm {
    padding: 0.3rem 0.65rem;
    font-size: 0.8rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border: none;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1d4ed8 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    border: none;
    box-shadow: 0 2px 4px rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: linear-gradient(135deg, var(--accent-dark) 0%, #047857 100%);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(16, 185, 129, 0.4);
}

.btn-outline-primary {
    color: var(--primary);
    border-color: var(--primary);
}

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

.btn-outline-secondary {
    color: var(--muted);
    border-color: var(--border);
}

.btn-outline-secondary:hover {
    background: var(--muted);
    border-color: var(--muted);
}

.btn-group {
    display: flex;
    gap: 0.5rem;
}

/* ==========================================================================
   Canvas previews
   ========================================================================== */
canvas {
    max-width: 100%;
    height: auto !important;
    border-radius: 8px;
    border: 1px solid var(--border);
    background-color: white;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

/* ==========================================================================
   Upload / drop zone
   ========================================================================== */
.input-group {
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
    border-radius: 8px;
    overflow: hidden;
}

.input-group .form-control {
    border-right: none;
}

.input-group .btn {
    border-radius: 0 8px 8px 0;
    padding: 0.5rem 1.25rem;
}

.drop-zone {
    position: relative;
    border: 2px dashed #cbd5e1;
    border-radius: 12px;
    padding: 1.5rem 1rem;
    text-align: center;
    transition: all 0.2s ease;
    background: #f8fafc;
    cursor: pointer;
}

.drop-zone:hover, .drop-zone.drag-over {
    border-color: var(--primary);
    background: var(--primary-tint);
}

.drop-zone.drag-over .drop-zone-content {
    opacity: 0.5;
}

.drop-zone-content {
    transition: opacity 0.3s ease;
}

.drop-zone .fa-cloud-upload-alt {
    font-size: 2.25rem;
    color: var(--primary);
    margin-bottom: 0.75rem;
    display: block;
}

.drop-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 0.35rem;
}

.drop-subtitle {
    font-size: 0.8rem;
    color: var(--muted);
}

.drop-input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

/* Upload Progress (reserved for future use) */
.upload-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--border);
    border-radius: 0 0 12px 12px;
    overflow: hidden;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.upload-progress.active {
    opacity: 1;
}

.upload-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    width: 0;
    transition: width 0.3s ease;
}

/* Paste Instructions */
.paste-instructions {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(30, 41, 59, 0.92);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.85rem;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.paste-instructions.show {
    opacity: 1;
    transform: translateY(0);
}

/* Keep controls visible */
#imagePositionControl, #zoomControl {
    margin-top: 0.5rem;
}

/* ==========================================================================
   Loading state (reserved for future use)
   ========================================================================== */
.loading {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(30, 41, 59, 0.9);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    z-index: 1000;
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 1200px) {
    .container-fluid {
        padding: 0.75rem;
    }
}

@media (max-width: 991px) {
    .container-fluid {
        padding: 0.75rem;
    }

    .col-md-4 {
        margin-bottom: 1rem;
    }
}

@media (max-width: 768px) {
    .card-body, .accordion-body {
        padding: 0.9rem;
    }

    .form-control, .form-select, .btn {
        font-size: 0.85rem;
    }
}