/* ==============================================================
   GOTOOL-PDF-PLATFORM Responsive Design Styles (responsive.css)
   ============================================================== */

/* ==============================================================
   1. Grid Responsive Architecture
   ============================================================== */

/* Desktop (> 900px): standard 3 or 4 columns */
@media (min-width: 901px) {
    .grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* Tablet & Medium Screens (641px – 900px): strictly 2 columns */
@media (min-width: 641px) and (max-width: 900px) {
    .grid-cols-4,
    .grid-cols-3,
    .grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        gap: 1.25rem !important;
    }

    .footer-columns {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        gap: 2rem !important;
    }
}

/* Mobile Screens (<= 640px): strictly 1 column */
@media (max-width: 640px) {
    .grid-cols-4,
    .grid-cols-3,
    .grid-cols-2 {
        grid-template-columns: 1fr !important;
        gap: 1rem !important;
    }

    /* Hero Responsive */
    .hero-section {
        padding: 2.5rem 1rem 2rem !important;
    }
    .hero-section h1 {
        font-size: 1.85rem !important;
        line-height: 1.2 !important;
    }
    .hero-section p {
        font-size: 1rem !important;
    }

    /* Tool Card Mobile Adaptation */
    .tool-card-item {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        min-width: 0 !important;
    }
    .tool-card-link {
        padding: 1.25rem !important;
    }
    .tool-card-title {
        font-size: 1.05rem !important;
    }
    .tool-card-desc {
        font-size: 0.85rem !important;
    }

    /* Tool List Card Mobile Adaptation */
    .tool-list-card {
        padding: 1rem !important;
        gap: 0.75rem !important;
    }

    /* Clean Mobile Footer: compact & generous spacing */
    .footer-wrapper {
        padding: 3rem 1.25rem 1.75rem !important;
    }
    .footer-columns {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }
    .footer-col-brand {
        padding-right: 0 !important;
        text-align: center;
    }
    .footer-brand {
        justify-content: center;
    }
    .footer-tagline {
        max-width: 100% !important;
        margin-left: auto;
        margin-right: auto;
    }
    .security-badge-pill {
        display: inline-flex;
        margin: 0 auto;
    }
    .footer-col {
        text-align: left;
    }
    .footer-heading {
        margin-bottom: 0.75rem !important;
        padding-bottom: 0.25rem;
        border-bottom: 1px solid var(--gray-800, #1e293b);
    }
    .footer-links {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 0.6rem 1rem !important;
    }
    .footer-bottom {
        padding-top: 1.5rem !important;
        font-size: 0.75rem !important;
    }
}

/* ==============================================================
   2. Component-Specific Breakpoints
   ============================================================== */

@media (max-width: 1024px) {
    .dashboard-layout {
        flex-direction: column;
    }

    .dashboard-sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--gray-200);
        padding: 1rem 0;
    }

    .sidebar-nav {
        flex-direction: row;
        overflow-x: auto;
        padding: 0.5rem 1rem;
        gap: 0.5rem;
    }

    .nav-section-title {
        display: none;
    }

    .sidebar-user-info {
        display: none;
    }

    .dashboard-content {
        padding: 1.5rem;
    }
}

@media (max-width: 768px) {
    /* Navbar Mobile Styles */
    .navbar-container {
        padding: 0 1rem;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #ffffff;
        flex-direction: column;
        padding: 1.5rem;
        border-bottom: 1px solid var(--gray-200);
        box-shadow: var(--shadow-md);
        gap: 1rem;
        z-index: 1000;
    }

    .nav-menu.is-open {
        display: flex;
    }

    .nav-toggle-btn {
        display: block !important;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--gray-800);
        cursor: pointer;
    }

    /* Tool Runner View */
    .tool-title {
        font-size: 1.75rem;
    }

    .dropzone-container {
        padding: 2rem 1rem;
        margin: 1rem;
    }

    .file-name {
        max-width: 180px;
    }

    .tool-actions {
        flex-direction: column;
    }

    .btn-process {
        width: 100%;
        justify-content: center;
    }

    /* Auth View */
    .auth-card {
        padding: 1.75rem 1.25rem;
        box-shadow: none;
        border: none;
        background: transparent;
    }

    .auth-wrapper {
        padding: 1.5rem 0.5rem;
        background: #ffffff;
    }

    .otp-digit-input {
        width: 40px;
        height: 48px;
        font-size: 1.25rem;
        gap: 0.25rem;
    }

    /* Dashboard */
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .tool-title {
        font-size: 1.5rem;
    }

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

    .btn-download, .btn-reset {
        width: 100%;
        justify-content: center;
    }
}