static/css/styles.css

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

html,
body {
    height: 100%;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: #000;
    color: #fff;
    position: relative;
    overflow-x: hidden;
}

/* Animated background */
.hero-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    z-index: 0;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.page-wrapper {
    position: relative;
    z-index: 1;
    min-height: 100vh;
}

/* Header with hero section */
.hero-header {
    position: relative;
    padding: 4rem 2rem;
    text-align: center;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.7) 100%);
    border-bottom: 2px solid rgba(59, 130, 246, 0.3);
}

.hero-header h1 {
    font-size: 3.5em;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #60a5fa 0%, #a78bfa 50%, #60a5fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: shine 3s linear infinite;
}

@keyframes shine {
    to {
        background-position: 200% center;
    }
}

.hero-header .subtitle {
    font-size: 1.3em;
    color: #94a3b8;
    font-weight: 300;
    max-width: 700px;
    margin: 0 auto;
}

/* Side navigation */
.main-container {
    display: flex;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    gap: 2rem;
}

.side-nav {
    width: 280px;
    flex-shrink: 0;
    position: sticky;
    top: 2rem;
    height: fit-content;
}

.nav-card {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 1.5rem;
    border: 1px solid rgba(59, 130, 246, 0.2);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.nav-card h3 {
    color: #e2e8f0;
    font-size: 1.1em;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.nav-link {
    display: block;
    padding: 1rem 1.25rem;
    margin-bottom: 0.5rem;
    background: transparent;
    border: none;
    color: #94a3b8;
    text-align: left;
    cursor: pointer;
    border-radius: 12px;
    font-size: 0.95em;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    width: 100%;
}

.nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    width: 3px;
    background: linear-gradient(180deg, #3b82f6, #8b5cf6);
    transform: scaleY(0);
    transition: transform 0.3s ease;
}

.nav-link:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #e2e8f0;
    transform: translateX(5px);
}

.nav-link.active {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
    color: #fff;
    font-weight: 600;
}

.nav-link.active::before {
    transform: scaleY(1);
}

/* Content area */
.content-area {
    flex: 1;
    min-width: 0;
}

.assessment-card {
    display: none;
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 3rem;
    border: 1px solid rgba(59, 130, 246, 0.2);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
    animation: slideIn 0.4s ease;
}

.assessment-card.active {
    display: block;
}

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

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

.card-header {
    margin-bottom: 2rem;
}

.card-header h2 {
    font-size: 2em;
    color: #e2e8f0;
    margin-bottom: 0.5rem;
}

.card-header p {
    color: #94a3b8;
    font-size: 1.05em;
}

/* Form styling */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.input-card {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.input-card:hover {
    border-color: rgba(59, 130, 246, 0.4);
    background: rgba(15, 23, 42, 0.8);
    transform: translateY(-2px);
}

.input-card label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: #cbd5e1;
    font-weight: 600;
    font-size: 0.95em;
}

.input-card label::before {
    content: '';
    width: 4px;
    height: 16px;
    background: linear-gradient(180deg, #3b82f6, #8b5cf6);
    border-radius: 2px;
}

.input-card input,
.input-card select {
    width: 100%;
    padding: 0.875rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 10px;
    color: #e2e8f0;
    font-size: 1em;
    transition: all 0.3s ease;
}

.input-card input:focus,
.input-card select:focus {
    outline: none;
    border-color: #3b82f6;
    background: rgba(0, 0, 0, 0.5);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.input-card .helper-text {
    margin-top: 0.5rem;
    font-size: 0.8em;
    color: #64748b;
    font-style: italic;
}

/* Height group with predict button */
.height-group {
    display: flex;
    align-items: stretch;
    gap: 0;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(148, 163, 184, 0.2);
    border-radius: 10px;
    overflow: visible;
    transition: all 0.3s ease;
}

.height-group input {
    border-radius: 10px 0 0 10px;
}

.height-group button:last-child {
    border-radius: 0 10px 10px 0;
}

.input-card {
    overflow: visible;
}

.height-group:focus-within {
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.height-group input {
    flex: 1;
    padding: 0.875rem;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    color: #e2e8f0;
    font-size: 1em;
    box-shadow: none !important;
}

.height-group input:focus {
    outline: none;
}

.height-group button {
    width: auto !important;
    padding: 0.875rem 1.5rem !important;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6) !important;
    color: white;
    border: none;
    border-left: 1px solid rgba(148, 163, 184, 0.3);
    cursor: pointer;
    font-size: 0.9em;
    font-weight: 600;
    white-space: nowrap;
    transition: opacity 0.2s ease;
    border-radius: 0 10px 10px 0 !important;
    transform: none !important;
}

.height-group button:hover {
    opacity: 0.9;
    transform: none !important;
}

.height-group button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.gba-height-btn {
    margin-top: 0.4rem;
    align-self: flex-start;

    background: rgba(96, 165, 250, 0.08);
    border: 1px solid rgba(96, 165, 250, 0.25);
    border-radius: 8px;

    padding: 0.25rem 0.6rem;
    font-size: 0.7em;
    font-weight: 500;

    color: #93c5fd;
    cursor: pointer;

    transition: background 0.2s ease, border 0.2s ease, color 0.2s ease;
}

.secondary-btn-style {
    margin-top: 0.4rem;
    align-self: flex-start;

    background: rgba(96, 165, 250, 0.08);
    border: 1px solid rgba(96, 165, 250, 0.25);
    border-radius: 8px;

    padding: 0.25rem 0.6rem;
    font-size: 0.7em;
    font-weight: 500;

    color: #93c5fd;
    cursor: pointer;

    transition: background 0.2s ease, border 0.2s ease, color 0.2s ease;
}

.gba-height-btn:hover,
.secondary-btn-style:hover {
    background: rgba(96, 165, 250, 0.18);
    border-color: rgba(96, 165, 250, 0.5);
    color: #bfdbfe;
}


.gba-height-btn:disabled,
.secondary-btn-style:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}


.height-group .gba-height-btn {
    margin-top: 0;
    align-self: auto;
    border-radius: 0;
    border-left: 1px solid rgba(148, 163, 184, 0.3);
    height: auto;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    border: none;
    padding: 0.875rem 1.5rem;
}

.height-group .gba-height-btn:hover {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    opacity: 0.9;
    color: white;
    border-color: transparent;
}

/* Custom tooltip styling for buttons */
.tooltip-btn {
    position: relative;
}

.tooltip-btn::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    padding: 10px 14px;
    background: rgba(15, 23, 42, 0.95);
    color: #e2e8f0;
    font-size: 1em;
    font-weight: 400;
    border-radius: 8px;
    border: 1px solid rgba(59, 130, 246, 0.3);
    white-space: normal;
    width: max-content;
    max-width: 280px;
    text-align: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 1000;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
    pointer-events: none;
    line-height: 1.4;
}

.tooltip-btn::before {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    border-width: 8px;
    border-style: solid;
    border-color: rgba(15, 23, 42, 0.95) transparent transparent transparent;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 1001;
}

.tooltip-btn:hover::after,
.tooltip-btn:hover::before {
    opacity: 1;
    visibility: visible;
}

/* Checkbox styling */
.checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.checkbox-row:hover {
    background: rgba(15, 23, 42, 0.8);
    border-color: rgba(59, 130, 246, 0.4);
}

.checkbox-row input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: #3b82f6;
}

.checkbox-row label {
    margin: 0 !important;
    color: #cbd5e1;
    font-weight: 500;
    cursor: pointer;
    flex: 1;
}

.checkbox-row label::before {
    display: none;
}

/* Action buttons */
.action-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(59, 130, 246, 0.2);
}

.primary-button {
    position: relative;
    width: 100%;
    padding: 1.25rem 2rem;
    background: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1em;
    font-weight: 700;
    cursor: pointer;
    overflow: hidden;
    transition: all 0.3s ease;
}

.primary-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.primary-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

.primary-button:hover::before {
    left: 100%;
}

.primary-button:active {
    transform: translateY(-1px);
}

.primary-button:disabled {
    background: #334155;
    cursor: not-allowed;
    transform: none;
}

/* Loading state */
.loading-state {
    display: none;
    text-align: center;
    padding: 3rem;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    border: 4px solid rgba(59, 130, 246, 0.2);
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-state p {
    color: #94a3b8;
    font-size: 1.1em;
}

/* Results section */
.results-section {
    display: none;
    margin-top: 2rem;
}

.results-header {
    text-align: center;
    padding: 2rem;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.15));
    border-radius: 16px;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.results-header h2 {
    font-size: 2em;
    margin-bottom: 1rem;
    color: #e2e8f0;
}

.risk-badge {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1.2em;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.risk-very-high {
    background: linear-gradient(135deg, #dc2626, #b91c1c);
    box-shadow: 0 4px 15px rgba(220, 38, 38, 0.4);
}

.risk-high {
    background: linear-gradient(135deg, #ea580c, #c2410c);
    box-shadow: 0 4px 15px rgba(234, 88, 12, 0.4);
}

.risk-moderate {
    background: linear-gradient(135deg, #ca8a04, #a16207);
    box-shadow: 0 4px 15px rgba(202, 138, 4, 0.4);
}

.risk-low {
    background: linear-gradient(135deg, #16a34a, #15803d);
    box-shadow: 0 4px 15px rgba(22, 163, 74, 0.4);
}

.risk-very-low {
    background: linear-gradient(135deg, #0891b2, #0e7490);
    box-shadow: 0 4px 15px rgba(8, 145, 178, 0.4);
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.stat-card:hover {
    border-color: rgba(59, 130, 246, 0.5);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.stat-label {
    font-size: 0.9em;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 2em;
    font-weight: 700;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Detail sections */
.detail-section {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.detail-section h3 {
    font-size: 1.5em;
    color: #e2e8f0;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.metric-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(59, 130, 246, 0.1);
}

.metric-row:last-child {
    border-bottom: none;
}

.metric-label {
    color: #94a3b8;
    font-weight: 500;
}

.metric-value {
    color: #e2e8f0;
    font-weight: 700;
    font-size: 1.1em;
}

/* Confidence visualization */
.confidence-section {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.confidence-bar-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
}

.confidence-bar-wrapper span {
    font-size: 0.85em;
    color: #64748b;
    font-weight: 600;
}

.confidence-bar {
    flex: 1;
    height: 40px;
    background: rgba(0, 0, 0, 0.4);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.confidence-fill {
    height: 100%;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.confidence-high {
    background: linear-gradient(90deg, #16a34a, #22c55e);
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.4);
}

.confidence-moderate-fill {
    background: linear-gradient(90deg, #ca8a04, #fbbf24);
    box-shadow: 0 0 20px rgba(251, 191, 36, 0.4);
}

.confidence-low-fill {
    background: linear-gradient(90deg, #ea580c, #f97316);
    box-shadow: 0 0 20px rgba(249, 115, 22, 0.4);
}

.confidence-text {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    font-weight: 800;
    color: white;
    font-size: 1.1em;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    z-index: 2;
}

/* Hazard breakdown */
.hazard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}

.hazard-card {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.hazard-card:hover {
    transform: scale(1.05);
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.hazard-type {
    font-size: 0.9em;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 1rem;
}

.hazard-value {
    font-size: 3em;
    font-weight: 800;
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Explanation section */
.explanation-section {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.factor-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 12px;
}

.factor-name {
    min-width: 200px;
    color: #cbd5e1;
    font-weight: 600;
}

.factor-bar {
    flex: 1;
    height: 28px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.factor-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
}

.factor-percentage {
    min-width: 60px;
    text-align: right;
    color: #e2e8f0;
    font-weight: 700;
    font-size: 1.05em;
}

/* Quality warnings */
.quality-warning {
    background: linear-gradient(135deg, rgba(202, 138, 4, 0.2), rgba(161, 98, 7, 0.2));
    border: 1px solid rgba(202, 138, 4, 0.4);
    border-left: 4px solid #ca8a04;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.quality-warning h4 {
    color: #fbbf24;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quality-warning ul {
    list-style: none;
    padding: 0;
}

.quality-warning li {
    padding: 0.5rem 0;
    color: #fde047;
    padding-left: 1.5rem;
    position: relative;
}

.quality-warning li::before {
    content: '⚠';
    position: absolute;
    left: 0;
}

/* Error state */
.error-message {
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.2), rgba(185, 28, 28, 0.2));
    border: 1px solid rgba(220, 38, 38, 0.4);
    border-left: 4px solid #dc2626;
    color: #fca5a5;
    padding: 1.5rem;
    border-radius: 12px;
    margin: 1.5rem 0;
    display: none;
}

/* Footer */
footer {
    margin-top: 4rem;
    padding: 2rem;
    text-align: center;
    color: #64748b;
    border-top: 1px solid rgba(59, 130, 246, 0.2);
    background: rgba(15, 23, 42, 0.6);
}

/* File upload styling */
input[type="file"] {
    cursor: pointer;
    padding: 1rem !important;
}

input[type="file"]::file-selector-button {
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    margin-right: 1rem;
    transition: all 0.3s;
}

input[type="file"]::file-selector-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

/* Pulse animation for predicted height */
@keyframes height-pulse {

    0%,
    100% {
        background: rgba(0, 0, 0, 0.3);
    }

    50% {
        background: rgba(59, 130, 246, 0.3);
    }
}

.height-pulse {
    animation: height-pulse 0.8s ease;
}

input[type="text"]::-webkit-calendar-picker-indicator,
input[type="number"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
}

/* Responsive design */
@media (max-width: 1024px) {
    .main-container {
        flex-direction: column;
    }

    .side-nav {
        width: 100%;
        position: static;
    }

    .nav-card {
        display: flex;
        overflow-x: auto;
        padding: 1rem;
    }

    .nav-card h3 {
        display: none;
    }

    .nav-link {
        white-space: nowrap;
        margin-right: 0.5rem;
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    .hero-header h1 {
        font-size: 2em;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

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

    .assessment-card {
        padding: 1.5rem;
    }

    .factor-name {
        min-width: 120px;
        font-size: 0.9em;
    }
}