/* ============================================
   MINIDOG'S - Estilos principales
   ============================================ */

:root {
    --primary: #E63946;
    --secondary: #FFB703;
    --accent: #FB8500;
    --dark: #1D3557;
    --light: #FFF8F0;
    --white: #FFFFFF;
    --gray-100: #F8F9FA;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-500: #ADB5BD;
    --gray-700: #495057;
    --gray-900: #212529;
    --success: #2ECC71;
    --danger: #E74C3C;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.16);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font: 'Poppins', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--light);
    color: var(--gray-900);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ========== HEADER ========== */
.site-header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from { transform: translateY(-100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    transition: transform var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-img {
    width: 48px;
    height: 48px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    transition: all var(--transition);
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(230, 57, 70, 0.08);
}

.nav-link--cta {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white) !important;
    box-shadow: 0 4px 15px rgba(230, 57, 70, 0.3);
}

.nav-link--cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
    background: linear-gradient(135deg, var(--accent), var(--primary));
}

/* ========== HERO ========== */
.hero {
    padding: 4rem 0 6rem;
    background: linear-gradient(135deg, var(--light) 0%, #FFF0E0 50%, #FFE8D0 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255,183,3,0.15) 0%, transparent 70%);
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    animation: fadeInLeft 0.8s ease;
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--secondary), var(--accent));
    color: var(--dark);
    padding: 0.4rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1rem;
    animation: bounce 2s ease infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1rem;
    color: var(--dark);
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--gray-700);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-image {
    display: flex;
    justify-content: center;
    animation: fadeInRight 0.8s ease, float 3s ease-in-out infinite;
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.hero-image img {
    max-width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,0.15));
}

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border: none;
    border-radius: var(--radius-full);
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(rgba(255,255,255,0.2), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.btn:hover::after {
    opacity: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    box-shadow: 0 4px 20px rgba(230, 57, 70, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(230, 57, 70, 0.45);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ========== FEATURES ========== */
.features {
    padding: 5rem 0;
    background: var(--white);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.section-subtitle {
    text-align: center;
    color: var(--gray-500);
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--gray-100);
    border-radius: var(--radius-md);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition);
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: var(--secondary);
    background: var(--white);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.feature-card p {
    color: var(--gray-700);
    font-size: 0.95rem;
}

/* ========== CTA SECTION ========== */
.cta-section {
    padding: 5rem 0;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '🌭';
    position: absolute;
    font-size: 8rem;
    opacity: 0.08;
    top: 50%;
    left: 10%;
    transform: translateY(-50%) rotate(-15deg);
}

.cta-section::after {
    content: '🌭';
    position: absolute;
    font-size: 6rem;
    opacity: 0.08;
    top: 50%;
    right: 10%;
    transform: translateY(-50%) rotate(15deg);
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
}

.cta-section p {
    font-size: 1.15rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.cta-section .btn-primary {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    position: relative;
}

.cta-section .btn-primary:hover {
    background: var(--secondary);
    color: var(--dark);
}

/* ========== SURVEY ========== */
.survey-page {
    padding: 2rem 0 4rem;
    min-height: 80vh;
}

.survey-header {
    text-align: center;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.6s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.survey-header h1 {
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.survey-header p {
    color: var(--gray-500);
    font-size: 1.05rem;
}

.survey-progress {
    max-width: 700px;
    margin: 0 auto 2rem;
}

.progress-bar {
    height: 8px;
    background: var(--gray-200);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
    width: 0%;
}

.progress-text {
    text-align: center;
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-top: 0.5rem;
}

.survey-form {
    max-width: 700px;
    margin: 0 auto;
}

.question-card {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 2px solid transparent;
    transition: all var(--transition);
    animation: fadeInUp 0.5s ease backwards;
}

.question-card:nth-child(1) { animation-delay: 0.1s; }
.question-card:nth-child(2) { animation-delay: 0.15s; }
.question-card:nth-child(3) { animation-delay: 0.2s; }
.question-card:nth-child(4) { animation-delay: 0.25s; }
.question-card:nth-child(5) { animation-delay: 0.3s; }
.question-card:nth-child(6) { animation-delay: 0.35s; }
.question-card:nth-child(7) { animation-delay: 0.4s; }
.question-card:nth-child(8) { animation-delay: 0.45s; }

.question-card:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(255, 183, 3, 0.3);
}

.question-card.has-error {
    border-color: var(--danger);
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.question-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: var(--white);
    border-radius: 50%;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.question-text {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 1.25rem;
}

.question-required {
    color: var(--danger);
    margin-left: 4px;
}

.options-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.option-item {
    position: relative;
}

.option-item input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.option-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    background: var(--gray-100);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    font-weight: 500;
}

.option-label:hover {
    background: rgba(255, 183, 3, 0.1);
    border-color: var(--secondary);
}

.option-item input:checked + .option-label {
    background: rgba(230, 57, 70, 0.08);
    border-color: var(--primary);
    color: var(--primary);
}

.option-check {
    width: 22px;
    height: 22px;
    border: 2px solid var(--gray-300);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition);
}

.option-item input[type="checkbox"] + .option-label .option-check {
    border-radius: 6px;
}

.option-item input:checked + .option-label .option-check {
    background: var(--primary);
    border-color: var(--primary);
}

.option-item input:checked + .option-label .option-check::after {
    content: '✓';
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
}

.error-message {
    color: var(--danger);
    font-size: 0.85rem;
    margin-top: 0.5rem;
    display: none;
}

.question-card.has-error .error-message {
    display: block;
}

.survey-actions {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
}

/* ========== THANK YOU ========== */
.thank-you {
    text-align: center;
    padding: 4rem 2rem;
    animation: fadeInUp 0.8s ease;
}

.thank-you-icon {
    font-size: 5rem;
    margin-bottom: 1.5rem;
    animation: bounce 1s ease infinite;
}

.thank-you h2 {
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 1rem;
}

.thank-you p {
    color: var(--gray-700);
    font-size: 1.1rem;
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ========== FOOTER ========== */
.site-footer {
    background: var(--dark);
    color: var(--white);
    padding: 2.5rem 0;
    margin-top: auto;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-logo {
    width: 40px;
    height: 40px;
}

.footer-brand p {
    opacity: 0.8;
    font-size: 0.9rem;
}

.footer-info {
    text-align: right;
}

.footer-info p {
    opacity: 0.7;
    font-size: 0.85rem;
}

.footer-small {
    font-size: 0.75rem !important;
    opacity: 0.5 !important;
}

/* ========== LOADING ========== */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(255,255,255,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ========== SURVEY INACTIVE ========== */
.survey-inactive {
    text-align: center;
    padding: 4rem 2rem;
}

.survey-inactive-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.survey-inactive h2 {
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.survey-inactive p {
    color: var(--gray-500);
}

/* ========== TOAST ========== */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    color: var(--white);
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.4s ease;
    z-index: 10000;
    max-width: 400px;
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-image {
        order: -1;
    }

    .hero-image img {
        max-width: 280px;
    }

    .nav-links {
        gap: 0.5rem;
    }

    .nav-link {
        padding: 0.4rem 0.75rem;
        font-size: 0.9rem;
    }

    .logo-text {
        font-size: 1.2rem;
    }

    .footer-inner {
        flex-direction: column;
        text-align: center;
    }

    .footer-info {
        text-align: center;
    }

    .cta-section h2 {
        font-size: 1.75rem;
    }

    .question-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 0 3rem;
    }

    .btn-lg {
        padding: 0.875rem 2rem;
        font-size: 1rem;
        width: 100%;
        justify-content: center;
    }
}