@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&family=Inter:wght@400;700&family=Lato:wght@400;700&display=swap');

/* ============================================
    Watermark Bitácora Miau - Global Styles
    ============================================ */

:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --border-radius: 0.375rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

/* ============================================
   Global Elements
   ============================================ */

* {
    box-sizing: border-box;
}

html, body {
    height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background-color: var(--light-color);
    color: #333;
}

/* ============================================
   Utilities
   ============================================ */

.shadow-sm {
    box-shadow: var(--box-shadow) !important;
}

.text-uppercase {
    letter-spacing: 0.05em;
}

.fw-bold {
    font-weight: 700;
}

/* ============================================
   Navbar
   ============================================ */

.navbar {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.15);
}

.navbar-brand {
    font-size: 1.25rem;
    letter-spacing: -0.01em;
}

/* ============================================
   Cards
   ============================================ */

.card {
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--border-radius);
    transition: all 0.2s ease-in-out;
}

.card:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
}

.card-title {
    margin-bottom: 1.25rem;
    font-weight: 600;
    font-size: 1rem;
    color: var(--dark-color);
}

.card-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

/* ============================================
   Forms
   ============================================ */

.form-control,
.form-select {
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.85rem;
    color: #495057;
}

.input-group {
    gap: 0.25rem;
}

.input-group > * {
    flex: 1;
}

.form-check {
    padding-top: 0.25rem;
}

.form-check-label {
    margin-bottom: 0;
    user-select: none;
    cursor: pointer;
}

.form-range {
    --bs-form-range-track-bg: #d5deea;
    --bs-form-range-track-height: 0.45rem;
    --bs-form-range-thumb-bg: #0d6efd;
    --bs-form-range-thumb-active-bg: #9ec5fe;
}

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

.form-range::-webkit-slider-runnable-track {
    background-color: #d5deea;
    border-radius: 999px;
}

.form-range::-moz-range-track {
    background-color: #d5deea;
    border-radius: 999px;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: var(--border-radius);
    padding: 0.5rem 1rem;
    transition: all 0.15s ease-in-out;
    border: none;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: #0b5ed7;
    transform: translateY(-1px);
    box-shadow: 0 0.25rem 0.5rem rgba(13, 110, 253, 0.3);
}

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

.btn-success:hover:not(:disabled) {
    background-color: #157347;
    transform: translateY(-2px);
    box-shadow: 0 0.5rem 1rem rgba(25, 135, 84, 0.3);
}

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

.btn-danger:hover:not(:disabled) {
    background-color: #bb2d3b;
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: #5a6268;
}

.btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.btn-lg {
    padding: 0.75rem 2rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.35rem 0.65rem;
    font-size: 0.75rem;
}

/* ============================================
   Canvas Container
   ============================================ */

.preview-header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.preview-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.preview-toolbar .zoom-select {
    width: 86px;
    min-width: 86px;
}

.preview-hud {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    font-size: 0.78rem;
    color: #495057;
}

.preview-hud span {
    display: inline-flex;
    align-items: center;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
    padding: 0.15rem 0.55rem;
}

#handModeBtn.is-active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.preview-canvas-container {
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border-radius: var(--border-radius);
    min-height: 500px;
    max-height: 70vh;
    overflow: auto;
    position: relative;
    padding: 12px;
    scrollbar-gutter: stable both-edges;
    overscroll-behavior: contain;
    cursor: default;
}

.preview-canvas-container.pannable {
    cursor: grab;
}

.preview-canvas-container.panning {
    cursor: grabbing;
    user-select: none;
}

.canvas-stage {
    --preview-zoom: 1;
    position: relative;
    flex: 0 0 auto;
    width: 800px;
    height: 600px;
}

.canvas-stage > .canvas-container {
    transform-origin: left top;
    transform: scale(var(--preview-zoom));
}

.preview-canvas-container canvas {
    display: block;
    width: auto;
    height: auto;
    max-width: none;
    max-height: none;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.preview-canvas-container.empty::before {
    content: "Carga una imagen para comenzar";
    position: absolute;
    inset: 0;
    color: #999;
    font-size: 1.1rem;
    font-weight: 500;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
}

/* ============================================
   Logo Gallery
   ============================================ */

.logo-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 0.75rem;
    padding: 0.75rem 0;
}

.logo-gallery .logo-item {
    position: relative;
    overflow: hidden;
    border-radius: 6px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    background-color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80px;
}

.logo-gallery .logo-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
}

.logo-gallery .logo-item:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(13, 110, 253, 0.2);
    transform: scale(1.05);
}

.logo-gallery .logo-item.active {
    border-color: var(--primary-color);
    background-color: rgba(13, 110, 253, 0.1);
}

/* ============================================
   Badges & Alerts
   ============================================ */

.badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.35rem 0.65rem;
    border-radius: 0.25rem;
}

.alert {
    border-radius: var(--border-radius);
    border: 1px solid;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: #bee5eb;
    color: #0c5460;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c6cb;
    color: #721c24;
}

/* ============================================
   Modals
   ============================================ */

.modal-content {
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--border-radius);
}

.modal-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.modal-body {
    padding: 1.5rem;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ============================================
   Toast Notifications
   ============================================ */

.toast-container {
    z-index: 1050;
}

.toast {
    background-color: white;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: var(--border-radius);
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

.toast.error {
    border-left: 4px solid var(--danger-color);
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast-body {
    padding: 1rem;
    font-size: 0.875rem;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 992px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .card {
        margin-bottom: 1rem;
    }

    .preview-toolbar {
        gap: 0.35rem;
    }

    .preview-hud {
        font-size: 0.72rem;
    }

    .preview-canvas-container {
        min-height: 400px;
    }

    .logo-gallery {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
    }
}

@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1rem;
    }

    .preview-toolbar h6 {
        width: 100%;
        margin-right: 0 !important;
    }

    .preview-toolbar .btn-group,
    .preview-toolbar .zoom-select,
    .preview-toolbar #handModeBtn {
        width: 100%;
    }

    .preview-canvas-container {
        min-height: 300px;
    }

    .btn-lg {
        padding: 0.6rem 1.2rem;
        font-size: 0.95rem;
    }

    .logo-gallery {
        grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    }

    .card-title {
        font-size: 0.95rem;
    }
}

/* ============================================
   Loading & Animations
   ============================================ */

.spinner-border {
    width: 1rem;
    height: 1rem;
    border-width: 0.2em;
}

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

.fade-in {
    animation: fadeIn 0.3s ease-in-out;
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
    body {
        background-color: white;
    }

    .navbar,
    .btn,
    .card-body > h5,
    .card-body > h6 {
        display: none;
    }

    .preview-canvas-container {
        background-color: white;
        border: 1px solid #ddd;
    }
}

/* ============================================
   Layers Panel (Sprint 2)
   ============================================ */

.layers-panel {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
    border-radius: var(--border-radius);
}

.layer-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem;
    border: 1px solid transparent;
    border-radius: 0.25rem;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
}

.layer-item:hover {
    background-color: #e9ecef;
    border-color: #dee2e6;
}

.layer-item.selected {
    background-color: #cfe2ff;
    border-color: #0d6efd;
    font-weight: 600;
}

.layer-item--locked {
    opacity: 0.6;
}

.layer-item__name {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 0.875rem;
}

.layer-item__icon {
    width: 1.25rem;
    height: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 0.25rem;
    transition: background-color 0.2s;
    font-size: 0.75rem;
}

.layer-item__icon:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

.layer-item__icon--visible::before {
    content: "👁";
}

.layer-item__icon--hidden::before {
    content: "🚫";
}

.layer-item__icon--lock::before {
    content: "🔒";
}

.layer-item__icon--unlock::before {
    content: "🔓";
}

#undoBtn:disabled,
#redoBtn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}