:root {
    --primary-color: #ff3399;
    --primary-dark: #cc0066;
    --secondary-color: #0ea3af;
    --gradient-primary: linear-gradient(135deg, #ff3399 0%, #ff66cc 100%);
    --gradient-secondary: linear-gradient(135deg, #0ea3af 0%, #2ecad5 100%);
    --gradient-ter:  linear-gradient(135deg, #cb356b 0%, #bd3f32 100%);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --border-radius: 16px;
}

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

/* ============================================ */
/* DISEÑO PARA DESKTOP (pantalla dividida) */
/* ============================================ */
@media (min-width: 992px) {
    body {
        margin: 0;
        padding: 0;
        min-height: 100vh;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        overflow-x: hidden;
        background: white;
    }

    form#form1 {
        display: block;
        width: 100%;
        margin: 0;
        padding: 0;
        min-height: 100vh;
    }

    .container {
        display: flex !important;
        width: 100% !important;
        max-width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
        min-height: 100vh;
    }

    /* SECCIÓN IZQUIERDA 30% */
    .text-center.mb-3 {
        width: 30% !important;
        background: var(--gradient-primary) !important;
        display: flex !important;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        margin: 0 !important;
        padding: 40px !important;
        min-height: 100vh;
        animation: slideFromLeft 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
        opacity: 0;
        transform: translateX(-50px);
    }

    /* SECCIÓN DERECHA 70% */
    .dni-container,
    .qr-container,
    .error-container,
    .loading {
        width: 70% !important;
        background: white !important;
        display: flex !important;
        align-items: center !important;
        justify-content: center !important;
        margin: 0 !important;
        padding: 40px !important;
        min-height: 100vh;
        animation: slideFromRight 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
        opacity: 0;
        transform: translateX(50px);
    }

    .logo-circle {
        width: 120px;
        height: 120px;
        margin: 0 auto 20px auto;
        background: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: var(--shadow);
        transition: transform 0.3s ease;
    }

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

    .logo-img {
        width: 70px;
        height: auto;
        max-height: 70px;
    }

    .text-white {
        font-size: 2rem !important;
        margin-top: 0.5rem !important;
        color: white !important;
        font-weight: bold;
    }

    .text-white-50 {
        font-size: 0.9rem !important;
        color: rgba(255, 255, 255, 0.9) !important;
    }

    .card {
        background: white !important;
        border-radius: 32px !important;
        box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15) !important;
        width: 100%;
        max-width: 700px !important;
        margin: 0 auto;
    }

    .card-header {
        border-radius: 32px 32px 0 0 !important;
        padding: 1.5rem !important;
    }

        .card-header h4 {
            font-size: 1.5rem !important;
        }

    .card-body {
        padding: 2rem !important;
    }

    .qr-img-large {
        max-width: 100% !important ;
        width: 100%;
    }

    .qr-wrapper {
        position: relative;
        display: inline-block;
        margin-bottom: 1rem;
    }

    .container.mt-3 {
        margin-top: 0 !important;
    }

    .form-control {
        padding: 1rem 1.2rem !important;
        font-size: 1.1rem !important;
        border-radius: 16px !important;
    }

    .btn {
        padding: 1rem 1.5rem !important;
        font-size: 1.1rem !important;
        border-radius: 16px !important;
    }

    /* Loading en desktop */
    .loading {
        text-align: center;
    }

    .spinner-border {
        width: 4rem !important;
        height: 4rem !important;
    }
}

/* ============================================ */
/* ANIMACIONES DE DESLIZAMIENTO */
/* ============================================ */
@keyframes slideFromLeft {
    0% {
        opacity: 0;
        transform: translateX(-80px);
    }

    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideFromRight {
    0% {
        opacity: 0;
        transform: translateX(80px);
    }

    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ============================================ */
/* DISEÑO PARA TABLETS */
/* ============================================ */
@media (min-width: 768px) and (max-width: 991px) {
    body {
        margin: 0;
        padding: 0;
        background: var(--gradient-primary);
    }

    .container {
        display: flex !important;
        flex-direction: column !important;
        padding: 40px !important;
        gap: 40px;
    }

    .text-center.mb-3 {
        display: block !important;
        text-align: center;
        margin-bottom: 1rem !important;
        width: 100% !important;
        background: transparent !important;
        min-height: auto !important;
        padding: 0 !important;
        animation: slideFromLeft 0.6s ease forwards;
        opacity: 0;
        transform: translateX(-30px);
    }

    .dni-container,
    .qr-container,
    .error-container,
    .loading {
        display: block !important;
        width: 100% !important;
        max-width: 600px;
        margin: 0 auto;
        background: transparent !important;
        min-height: auto !important;
        padding: 0 !important;
        animation: slideFromRight 0.6s ease forwards;
        opacity: 0;
        transform: translateX(30px);
    }

    .card {
        background: white !important;
        border-radius: 28px !important;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15) !important;
    }

    .card-header {
        border-radius: 28px 28px 0 0 !important;
    }

    .logo-circle {
        width: 100px;
        height: 100px;
    }

    .logo-img {
        width: 60px;
        max-height: 60px;
    }

    .text-white {
        font-size: 2rem !important;
    }

    .qr-img-large {
        max-width: 300px !important;
    }
}

/* ============================================ */
/* DISEÑO PARA MOBILE (logo arriba, diseño original) */
/* ============================================ */
@media (max-width: 767px) {
    body {
        background: var(--gradient-primary);
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        padding: 20px 0;
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    form#form1 {
        display: block;
        padding: 0;
        width: 100%;
    }

    .container {
        display: block !important;
        padding: 10px;
        margin: 0 auto;
    }

    .text-center.mb-3 {
        display: block !important;
        text-align: center;
        margin-bottom: 1rem !important;
        width: 100% !important;
        background: transparent !important;
        min-height: auto !important;
        padding: 0 !important;
        animation: fadeIn 0.5s ease;
    }

    .dni-container,
    .qr-container,
    .error-container,
    .loading {
        display: block !important;
        width: 100% !important;
        max-width: 500px;
        margin: 0 auto;
        background: transparent !important;
        min-height: auto !important;
        padding: 0 !important;
        animation: fadeIn 0.5s ease;
    }

    .card {
        background: rgba(255, 255, 255, 0.95) !important;
        border-radius: 20px !important;
        box-shadow: var(--shadow) !important;
    }

    .logo-circle {
        width: 65px;
        height: 65px;
        margin: 0 auto;
        background: white;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        box-shadow: var(--shadow);
    }

    .logo-img {
        width: 40px;
        max-height: 40px;
    }

    .text-white {
        font-size: 1.5rem;
        margin-top: 0.5rem !important;
        color: white !important;
    }

    .text-white-50 {
        font-size: 0.85rem;
        color: rgba(255, 255, 255, 0.8) !important;
    }

    .qr-img-large {
        max-width: 220px;
    }

    .card-body {
        padding: 1.5rem;
    }

    .text-start p {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }

    .dni-container,
    .qr-container,
    .error-container,
    .loading {
        margin: 1rem auto;
        width: calc(100% - 2rem);
    }
}

/* ============================================ */
/* ESTILOS COMPARTIDOS */
/* ============================================ */

.card {
    border: none;
    overflow: hidden;
    margin: 0;
}

    .card > :first-child {
        margin-top: 0 !important;
        border-top-left-radius: inherit !important;
        border-top-right-radius: inherit !important;
    }

.card-header {
    border: none !important;
    padding: 1rem !important;
    margin: 0 !important;
    width: 100%;
    display: block;
}

    .card-header.bg-primary {
        background: var(--gradient-primary) !important;
    }

    .card-header.bg-success {
        background: var(--gradient-primary) !important;
    }

    .card-header.bg-danger {
        background: linear-gradient(135deg, #dc3545 0%, #c82333 100%) !important;
    }

    .card-header h4 {
        margin: 0;
        font-weight: 600;
        font-size: 1.2rem;
    }

.card-body {
    padding: 1.5rem;
}

.form-control {
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: all 0.3s ease;
}

    .form-control:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 3px rgba(255, 51, 153, 0.1);
    }

.form-label {
    font-weight: 600;
    color: #333;
    margin-bottom: 0.5rem;
}

.text-muted {
    color: #6c757d !important;
    font-size: 0.8rem;
}

.btn {
    border-radius: 12px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border: none;
}

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

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 5px 20px rgba(255, 51, 153, 0.4);
    }

.qr-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 1rem;
}

.qr-img-large {
    max-width: 280px;
    width: 100%;
    border-radius: 16px;
    padding: 15px;
    background: white;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

    .qr-img-large:hover {
        transform: scale(1.02);
    }

.btn-download-qr {
    position: absolute;
    bottom: 5px;
    right: 5px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
}

    .btn-download-qr:hover {
        transform: scale(1.1);
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }

.loading {
    text-align: center;
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}

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

.text-start p {
    margin-bottom: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

    .text-start p:last-child {
        border-bottom: none;
    }

.text-start strong {
    color: #555;
    font-size: 0.9rem;
}

.text-start .fw-bold {
    color: var(--primary-color);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 576px) {
    .card-body {
        padding: 1rem;
    }

    .qr-img-large {
        max-width: 220px;
    }

    .text-start p {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
}

/* ============================================ */
/* MOBILE */
/* ============================================ */
@media (max-width: 767px) {
    body {
        background: white !important;
    }

    .dni-container,
    .qr-container,
    .error-container {
        padding: 20px !important;
    }

    .logo-circle {
        width: 90px !important;
        height: 90px !important;
    }

    .logo-img {
        width: 55px !important;
        height: auto;
        max-height: 55px !important;
    }

    .qr-img-large {
        max-width: 100% !important;
        width: 100%;
    }
}