/* ==================== RESPONSIVE ==================== */

/* --- 640px: grid y tipografía --- */
@media (max-width: 640px) {
    .guides-grid {
        grid-template-columns: 1fr;
    }

    h1 {
        font-size: 2.5rem;
    }

    .card {
        padding: 1.6rem;
    }

    .countdown-time {
        font-size: 1.45rem;
    }
}

/* --- 900px: header main --- */
@media (max-width: 900px) {
    .header-main {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .countdown-box {
        width: 100%;
        max-width: 380px;
    }
}

/* --- 1100px: header grid --- */
@media (max-width: 1100px) {
    .header-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .header-side.right-side {
        text-align: center;
    }

    .header-side.left-side,
    .header-side.right-side {
        align-items: center;
    }
}

/* --- 480px: mobile principal --- */
@media (max-width: 480px) {

    /* HEADER */
    .header-grid {
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 1rem;
        gap: 1rem;
        width: -webkit-fill-available;
    }

    header {
        padding: 0;
    }

    .header-center {
        width: 100%;
        padding: 1.2rem 1.2rem;
        border-radius: 1rem;
        height: auto;
    }

    h1 {
        font-size: 1.6rem;
        letter-spacing: -1px;
    }

    header p {
        font-size: 0.85rem;
    }

    .parrafito {
        width: 80%;
        align-self: anchor-center;
    }

    /* Countdowns */
    .header-side.left-side,
    .header-side.right-side {
        width: 100%;
        align-items: center;
    }

    .countdowns-container {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 8px;
        width: 100%;
    }

    .countdown-box {
        flex: 1 1 140px;
        max-width: 180px;
        min-width: unset;
        padding: 10px 12px;
        border-radius: 14px;
    }

    .countdown-title {
        font-size: 0.78rem;
    }

    .countdown-time {
        font-size: 0.95rem;
        letter-spacing: 1px;
    }

    .countdown-time span {
        min-width: 24px;
    }

    .add-countdown-btn {
        display: none;
    }

    .header-side.left-side,
    .header-side.right-side,
    #countdowns-left,
    #countdowns-right {
        display: none;
    }

    #add-countdown-btn {
        display: none;
    }

    /* CONTAINER */
    .container {
        padding: 0 1rem 3rem;
    }

    /* QUOTE CARD */
    .quote-card {
        padding: 16px 20px;
        margin-bottom: 1.2rem;
    }

    .quote-text {
        font-size: 0.88rem;
    }

    .quote-author {
        font-size: 0.78rem;
    }

    /* FILTROS */
    .filters-section {
        gap: 8px;
        margin-bottom: 1.2rem;
    }

    .filter-btn {
        padding: 6px 12px;
        font-size: 0.75rem;
        min-height: 32px;
    }

    /* BOTÓN AGREGAR */
    .add-section {
        margin-bottom: 1.5rem;
    }

    .add-button {
        width: 100%;
        justify-content: center;
        padding: 10px 20px;
        font-size: 0.95rem;
    }

    .plus {
        font-size: 1rem;
    }

    /* PROGRESS TOTAL */
    .total-progress-card {
        padding: 14px 16px;
        margin-bottom: 1rem;
    }

    .total-progress-pct {
        font-size: 1.1rem;
    }

    /* GRID DE CARDS */
    .guides-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }

    .card {
        padding: 1.4rem;
        border-radius: 20px;
    }

    .guide-name {
        font-size: 1.2rem;
        max-width: 100%;
    }

    .progress-info {
        font-size: 0.9rem;
    }

    .percentage {
        font-size: 0.85rem;
        padding: 3px 10px;
    }

    .progress-bar-container {
        height: 18px;
        margin-bottom: 1.2rem;
    }

    /* EDIT SECTION */
    .edit-section {
        flex-wrap: wrap;
        gap: 8px;
    }

    .input-group {
        flex: 1 1 80px;
    }

    .input-group input {
        padding: 10px 12px;
        font-size: 1rem;
        border-radius: 12px;
    }

    .update-btn {
        width: 100%;
        padding: 8px;
        border-radius: 10px;
        font-size: 0.82rem;
    }

    /* MODALES */
    .modal-content {
        margin: 1rem;
        padding: 1.5rem;
        border-radius: 20px;
        max-width: calc(100vw - 2rem);
    }

    #modal-title {
        font-size: 1.4rem;
        margin-bottom: 1rem;
    }

    .form-row {
        grid-template-columns: 1fr 1fr;
        gap: 0.8rem;
    }

    .form-group {
        margin-bottom: 1rem;
    }

    label {
        font-size: 0.9rem;
    }

    input[type="text"],
    input[type="number"],
    input[type="datetime-local"] {
        padding: 12px 14px;
        font-size: 1rem;
        border-radius: 14px;
    }

    .modal-buttons {
        gap: 0.8rem;
        margin-top: 1.2rem;
    }

    .cancel-button,
    .save-button {
        padding: 10px;
        font-size: 0.9rem;
    }

    /* EMPTY STATE */
    .empty-icon {
        font-size: 4rem;
    }

    .empty-state h2 {
        font-size: 1.4rem;
    }

    .empty-state p {
        font-size: 1rem;
    }

    /* REFRESH BTN */
    .refresh-btn {
        position: fixed;
        z-index: 1000;
        top: 16px;
        right: 16px;
    }

    /* AUTH */
    #auth-modal {
        align-items: flex-end;
        padding: 0;
    }

    .auth-card {
        border-radius: 28px 28px 0 0;
        padding: 2.2rem 1.6rem 2.4rem;
        max-width: 100%;
        animation: authSlideUp 0.38s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    @keyframes authSlideUp {
        from { transform: translateY(100%); opacity: 0.6; }
        to   { transform: translateY(0);    opacity: 1; }
    }

    .auth-close {
        top: 14px;
        right: 16px;
    }

    .auth-logo h2 {
        font-size: 1.3rem;
    }

    .auth-logo p {
        font-size: 0.85rem;
    }

    .auth-tabs {
        margin-bottom: 1.4rem;
    }

    .auth-tab {
        font-size: 0.88rem;
        padding: 9px 6px;
    }

    .auth-submit {
        padding: 14px;
        font-size: 1rem;
    }

    /* UI COMPONENTS */
    .sync-btn {
        font-size: 0.82rem;
        padding: 7px 16px;
        margin-top: 0.7rem;
    }

    .user-pill {
        font-size: 0.78rem;
        padding: 4px 12px 4px 5px;
        margin-top: 0.7rem;
    }

    .user-avatar {
        width: 26px;
        height: 26px;
        font-size: 0.75rem;
    }

    .logout-btn {
        font-size: 0.74rem;
    }

    #save-indicator {
        bottom: 16px;
        right: 16px;
        left: 16px;
        text-align: center;
        font-size: 0.82rem;
        padding: 10px 16px;
    }

    .form-group input {
        width: 100%;
        padding: 16px 20px;
        font-size: 1.05rem;
        font-weight: 500;
        color: #4c1d95;
        background: #fff;
        border: 2px solid #e0c4f7;
        border-radius: 18px;
        transition: all 0.3s ease;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
    }
}