/* =====================================================
   PLANTILLAS PACKAGING - Estilos
   ===================================================== */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --bg: #f8fafc;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --success: #10b981;
    --error: #ef4444;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* Header */
header {
    background: var(--primary);
    color: white;
    padding: 1rem 1.5rem;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title h1 {
    font-size: 1.5rem;
    margin-bottom: 0.2rem;
}

.header-title p {
    opacity: 0.9;
    font-size: 0.9rem;
}

.unit-selector {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.15);
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
}

.unit-selector label {
    font-size: 0.85rem;
    opacity: 0.9;
}

.unit-selector select {
    background: white;
    border: none;
    padding: 0.4rem 0.6rem;
    border-radius: 4px;
    font-size: 0.85rem;
    cursor: pointer;
    color: var(--text);
}

/* Ad Banners */
.ad-banner {
    background: #f1f5f9;
    border: 2px dashed var(--border);
    padding: 1rem;
    text-align: center;
    color: var(--text-light);
    margin: 1rem;
    border-radius: 8px;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-banner-vertical {
    min-height: 600px;
    width: 160px;
    flex-shrink: 0;
}

.ad-banner:has(.adsbygoogle[data-ad-status="filled"]) .ad-placeholder {
    display: none;
}

.ad-placeholder {
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Main Container */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    gap: 1rem;
}

.sidebar-ad {
    display: none;
}

@media (min-width: 1200px) {
    .sidebar-ad {
        display: block;
    }
}

.content {
    flex: 1;
}

/* Tool Cards */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.tool-card {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 0.75rem 1rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.2s;
    border: 2px solid transparent;
}

.tool-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.tool-card.active {
    border-color: var(--primary);
}

.tool-card h3 {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.95rem;
    margin-bottom: 0.2rem;
}

.tool-card p {
    color: var(--text-light);
    font-size: 0.8rem;
    line-height: 1.3;
}

.tool-icon {
    font-size: 1.5rem;
}

/* Generator Panels */
.generator-panel {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    display: none;
}

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

.generator-panel h2 {
    margin-bottom: 1rem;
    color: var(--primary);
}

/* Forms */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.form-group label {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text);
}

.form-group small {
    color: var(--text-light);
    font-size: 0.75rem;
}

.form-group input,
.form-group select {
    padding: 0.7rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input.input-error {
    border-color: var(--error);
    background-color: #fef2f2;
}

.form-group input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.error-message {
    color: var(--error);
    font-size: 0.75rem;
    display: none;
}

.info-message {
    color: #666;
    font-size: 0.85em;
    background: #f0f9ff;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    border-left: 3px solid var(--primary);
}

/* Input Mode Toggle */
.input-mode-toggle {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.input-mode-toggle button {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.input-mode-toggle button.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Buttons */
.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.btn-secondary {
    background: white;
    color: var(--primary);
    border: 1px solid var(--primary);
    padding: 0.6rem 1rem;
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
}

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

.buttons-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.5rem;
}

.buttons-left {
    display: flex;
    gap: 0.5rem;
}

/* Tooltip */
.btn-tooltip-wrapper {
    position: relative;
    display: inline-block;
}

.btn-tooltip {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    white-space: nowrap;
    margin-bottom: 8px;
    transition: opacity 0.2s;
    z-index: 100;
}

.btn-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 6px solid transparent;
    border-top-color: #333;
}

.btn-tooltip-wrapper.disabled:hover .btn-tooltip {
    visibility: visible;
    opacity: 1;
}

.btn-tooltip-wrapper:not(.disabled) .btn-tooltip {
    display: none;
}

/* Preview */
.preview-container {
    margin-top: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    background: white;
}

.preview-header {
    background: var(--bg);
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-header h4 {
    font-size: 0.9rem;
    color: var(--text-light);
}

.preview-canvas {
    width: 100%;
    max-width: 900px;
    /* Altura automática: se adapta a la proporción de cada figura */
    min-height: 120px;
    max-height: 600px;
    overflow: hidden;
    margin: 0 auto;
    box-sizing: border-box;
    padding: 5%;
    display: block;
}

.preview-canvas svg {
    /* width=100% → siempre llena el ancho disponible.
       height=auto → alto calculado por el viewBox (proporcional).
       max-height evita que formas muy altas desborden el contenedor;
       en ese caso el SVG usa preserveAspectRatio "xMidYMid meet" para
       encajar la figura completa dentro del área visible. */
    display: block;
    width: 100%;
    height: auto;
    max-height: 520px;
}

/* Tips Box */
.tips-box {
    background: #f0f9ff;
    border-left: 4px solid var(--primary);
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 0 8px 8px 0;
}

.tips-box h4 {
    margin-bottom: 0.5rem;
    color: var(--primary);
}

.tips-box ul {
    margin-left: 1.2rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-light);
    font-size: 0.9rem;
}

footer a {
    color: var(--primary);
    text-decoration: none;
}

/* Responsive */
@media (max-width: 900px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    header {
        padding: 0.6rem 1rem;
    }

    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.4rem;
    }

    .header-title h1 {
        font-size: 1.1rem;
        margin-bottom: 0;
    }

    .header-title p {
        font-size: 0.75rem;
    }

    .unit-selector {
        padding: 0.3rem 0.6rem;
    }

    .unit-selector label,
    .unit-selector select {
        font-size: 0.78rem;
    }

    .tools-grid {
        display: flex;
        flex-direction: row;
        gap: 0.4rem;
    }

    .tool-card {
        flex: 1;
        padding: 0.5rem 0.4rem;
        text-align: center;
    }

    .tool-card p {
        display: none;
    }

    .tool-card h3 {
        font-size: 0.78rem;
        justify-content: center;
        gap: 0.2rem;
        flex-direction: column;
        margin-bottom: 0;
    }

    .tool-icon {
        font-size: 1.1rem;
    }

    .generator-panel h2 {
        font-size: 1.1rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .buttons-row {
        flex-direction: column;
    }

    .buttons-left {
        width: 100%;
    }

    .buttons-left .btn-secondary {
        flex: 1;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }
}