/* ===========================================
   BIM CHECKER - COMMON STYLES
   Shared styles for all pages
   =========================================== */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    padding: 20px;
}

/* PAGE CONTAINER */
.page-container {
    max-width: 1900px;
    width: 100%;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    overflow: hidden;
}

.container {
    width: calc(100% - 40px);
    max-width: 1900px;
    margin: 0 auto;
    background: white;
    border-radius: 15px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    overflow: hidden;
}

/* HEADER */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    text-align: center;
    position: relative;
}

.header h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
    font-weight: 700;
}

.header p {
    font-size: 1.1em;
    opacity: 0.95;
}

.back-home-btn {
    position: absolute;
    left: 30px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.2);
    color: white;
    border: 2px solid white;
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.back-home-btn:hover {
    background: white;
    color: #667eea;
}

/* BUTTONS */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.btn-primary {
    background: #667eea;
    color: white;
}

.btn-primary:hover {
    background: #5568d3;
}

.btn-primary:disabled {
    background: #cbd5e0;
    cursor: not-allowed;
}

.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-icon {
    background: white;
    border: 2px solid #dee2e6;
    border-radius: 6px;
    padding: 6px 12px;
    cursor: pointer;
    font-size: 1.1em;
    transition: all 0.2s;
}

.btn-icon:hover {
    background: #667eea;
    border-color: #667eea;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}

/* UPLOAD SECTIONS */
.upload-section {
    background: #f8f9fa;
    padding: 40px;
    border-bottom: 2px solid #e9ecef;
}

.file-upload,
.upload-area,
.upload-box {
    border: 3px dashed #667eea;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-upload:hover,
.upload-area:hover,
.upload-box:hover {
    border-color: #764ba2;
    background: #f8f9ff;
}

.file-upload.dragover,
.upload-area.dragover {
    border-color: #764ba2;
    background: #f8f9ff;
    transform: scale(1.02);
}

.upload-box.has-files {
    border-color: #28a745;
    border-style: solid;
}

.file-upload-icon,
.upload-icon {
    font-size: 4em;
    color: #667eea;
    margin-bottom: 20px;
}

.upload-box.has-files .upload-icon {
    color: #28a745;
}

.file-upload h3,
.upload-box h3 {
    font-size: 1.2em;
    color: #495057;
    margin-bottom: 10px;
}

.file-upload p,
.upload-box p {
    color: #6c757d;
    font-size: 1em;
}

.file-input {
    display: none;
}

/* DROP ZONES */
.drop-zone {
    background: white;
    border: 3px dashed #cbd5e0;
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    margin-bottom: 15px;
}

.drop-zone:hover {
    border-color: #667eea;
    background: #f7fafc;
}

.drop-zone.drag-over {
    border-color: #667eea;
    background: #eef2ff;
    transform: scale(1.02);
}

.drop-icon {
    font-size: 3em;
    margin-bottom: 10px;
    opacity: 0.6;
}

.drop-hint {
    font-size: 0.9em;
    color: #a0aec0;
}

/* MODALS */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    display: none;
}

.modal-overlay.show {
    display: flex;
}

.modal-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
    max-width: 700px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px 30px;
    border-radius: 12px 12px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.6em;
}

.modal-close {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    font-size: 1.5em;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s;
}

.modal-close:hover {
    background: rgba(255,255,255,0.3);
}

.modal-body {
    padding: 30px;
}

.modal-footer {
    padding: 20px 30px;
    border-top: 2px solid #e9ecef;
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* LOADING OVERLAY */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-overlay.show {
    display: flex;
}

.loading-content {
    background: white;
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    max-width: 500px;
    width: 90%;
}

.loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #667eea;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    font-size: 1.2em;
    color: #2d3748;
    margin-bottom: 10px;
    font-weight: 600;
}

.loading-subtext {
    color: #6c757d;
    font-size: 0.95em;
    margin-bottom: 20px;
}

/* PROGRESS BAR */
.progress-bar-container {
    background: #e9ecef;
    border-radius: 10px;
    height: 20px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-bar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    height: 100%;
    width: 0%;
    transition: width 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.85em;
    font-weight: 600;
}

/* ERROR MESSAGES */
.error-message {
    background: #feb2b2;
    color: #742a2a;
    padding: 15px;
    border-radius: 8px;
    margin-top: 15px;
    display: none;
    border: 2px solid #fc8181;
}

/* CONTEXT MENU */
.context-menu {
    position: fixed;
    background: white;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    padding: 8px 0;
    z-index: 1000;
    min-width: 180px;
    display: none;
}

.context-menu.show {
    display: block;
}

.context-menu-item {
    padding: 10px 20px;
    cursor: pointer;
    transition: background 0.2s;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #4a5568;
}

.context-menu-item:hover {
    background: #f7fafc;
}

.context-menu-item.danger:hover {
    background: #fff5f5;
    color: #e53e3e;
}

/* TABS */
.tabs {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    border-bottom: 2px solid #e9ecef;
}

.tab {
    padding: 12px 24px;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 1em;
    color: #6c757d;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
    position: relative;
    top: 2px;
    font-weight: 600;
}

.tab.active {
    color: #667eea;
    border-bottom-color: #667eea;
}

.tab:hover {
    color: #667eea;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* RESPONSIVE DESIGN */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .header h1 {
        font-size: 2em;
    }

    .header p {
        font-size: 1em;
    }

    .back-home-btn {
        position: static;
        transform: none;
        display: block;
        margin-bottom: 15px;
    }

    .upload-section {
        padding: 20px;
    }

    .modal-container {
        width: 95%;
    }

    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
}

/* WIDESCREEN SUPPORT */
@media (min-width: 1920px) {
    .container, .page-container {
        max-width: 95%;
    }
}

@media (min-width: 2560px) {
    .container, .page-container {
        max-width: 97%;
    }
}

@media (min-width: 3440px) {
    .container, .page-container {
        max-width: 98%;
    }
}

/* ===========================================
   TOAST NOTIFICATIONS
   =========================================== */

#toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    max-width: 500px;
    padding: 16px 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transform: translateX(400px);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    pointer-events: auto;
    border-left: 5px solid #cbd5e0;
}

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

.toast-icon {
    font-size: 1.8em;
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    color: #2d3748;
    font-size: 0.95em;
    line-height: 1.5;
    word-wrap: break-word;
}

.toast-close {
    background: none;
    border: none;
    font-size: 1.8em;
    color: #a0aec0;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
    flex-shrink: 0;
}

.toast-close:hover {
    background: #f7fafc;
    color: #4a5568;
}

/* Toast types */
.toast-error {
    border-left-color: #f56565;
}

.toast-warning {
    border-left-color: #ed8936;
}

.toast-success {
    border-left-color: #48bb78;
}

.toast-info {
    border-left-color: #4299e1;
}

/* Confirmation Dialog */
.toast-confirm-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10001;
    opacity: 0;
    transition: opacity 0.3s;
    backdrop-filter: blur(4px);
}

.toast-confirm-overlay.show {
    opacity: 1;
}

.toast-confirm-dialog {
    background: white;
    border-radius: 16px;
    padding: 30px;
    max-width: 450px;
    width: 90%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transform: scale(0.8);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.toast-confirm-dialog.show {
    transform: scale(1);
    opacity: 1;
}

.toast-confirm-icon {
    font-size: 3em;
    text-align: center;
    margin-bottom: 20px;
}

.toast-confirm-message {
    font-size: 1.1em;
    color: #2d3748;
    text-align: center;
    margin-bottom: 25px;
    line-height: 1.6;
}

.toast-prompt-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1em;
    margin-bottom: 20px;
    transition: border-color 0.2s;
}

.toast-prompt-input:focus {
    outline: none;
    border-color: #667eea;
}

.toast-confirm-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

.toast-btn {
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.toast-btn-cancel {
    background: #e2e8f0;
    color: #4a5568;
}

.toast-btn-cancel:hover {
    background: #cbd5e0;
}

.toast-btn-confirm {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.toast-btn-confirm:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

/* Mobile responsive */
@media (max-width: 768px) {
    #toast-container {
        top: 10px;
        right: 10px;
        left: 10px;
    }

    .toast {
        min-width: unset;
        max-width: unset;
    }

    .toast-confirm-dialog {
        max-width: unset;
    }
}

/* ===========================================
   LANGUAGE SWITCHER
   =========================================== */

.language-switcher {
    position: absolute;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 5px;
    background: rgba(255, 255, 255, 0.2);
    padding: 4px;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.lang-btn {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: rgba(255, 255, 255, 0.8);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9em;
    transition: all 0.2s ease;
    letter-spacing: 0.5px;
}

.lang-btn:hover {
    color: white;
    background: rgba(255, 255, 255, 0.15);
}

.lang-btn.active {
    background: white;
    color: #667eea;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Mobile language switcher */
@media (max-width: 768px) {
    .language-switcher {
        position: static;
        transform: none;
        margin: 0 auto 15px;
        width: fit-content;
    }
}