/* ============================================
   Kotak Saran Sekolah Puri Bekasi
   Modern UI - 2025 Style
   ============================================ */

:root {
    --primary: #1e3a5f;
    --primary-light: #2c5282;
    --primary-dark: #0f2744;
    --accent: #3b82f6;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --kritik: #ef4444;
    --saran: #3b82f6;
    --pujian: #10b981;
    --bg: #f0f4f8;
    --card: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 4px 24px rgba(30, 58, 95, 0.08);
    --shadow-lg: 0 12px 40px rgba(30, 58, 95, 0.12);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Background Shapes */
.bg-shapes {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #93c5fd, #c4b5fd);
    top: -100px;
    right: -100px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #6ee7b7, #93c5fd);
    bottom: 10%;
    left: -80px;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, #fcd34d, #f9a8d4);
    top: 40%;
    right: 5%;
    opacity: 0.25;
}

.container {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
    padding: 32px 20px 48px;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 28px;
}

.logo-area {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 12px;
}

.logo-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 26px;
    box-shadow: 0 8px 20px rgba(30, 58, 95, 0.25);
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.header-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    max-width: 480px;
    margin: 0 auto;
    line-height: 1.55;
}

/* Card */
.card {
    background: var(--card);
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    padding: 32px 28px;
    border: 1px solid rgba(255,255,255,0.8);
}

/* Steps */
.steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    opacity: 0.4;
    transition: var(--transition);
}

.step.active {
    opacity: 1;
}

.step-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--border);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: 700;
    transition: var(--transition);
}

.step.active .step-num {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 12px rgba(30, 58, 95, 0.3);
}

.step-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
}

.step.active .step-label {
    color: var(--primary);
}

.step-line {
    width: 40px;
    height: 2px;
    background: var(--border);
    margin: 0 8px;
    margin-bottom: 22px;
}

/* Form Sections */
.form-section {
    margin-bottom: 32px;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.section-title i {
    color: var(--primary);
    font-size: 1.15rem;
}

.section-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

/* Jenis Cards */
.jenis-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.jenis-card {
    cursor: pointer;
    position: relative;
}

.jenis-card input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.jenis-inner {
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 20px 12px;
    text-align: center;
    transition: var(--transition);
    background: #fafbfc;
    height: 100%;
}

.jenis-card:hover .jenis-inner {
    border-color: #cbd5e1;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.jenis-card input:checked + .jenis-inner {
    border-width: 2px;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.jenis-card input:checked + .jenis-inner.kritik {
    border-color: var(--kritik);
    background: #fef2f2;
}

.jenis-card input:checked + .jenis-inner.saran {
    border-color: var(--saran);
    background: #eff6ff;
}

.jenis-card input:checked + .jenis-inner.pujian {
    border-color: var(--pujian);
    background: #ecfdf5;
}

.jenis-icon {
    width: 48px;
    height: 48px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 1.4rem;
    color: #fff;
}

.kritik .jenis-icon { background: linear-gradient(135deg, #f87171, #ef4444); }
.saran .jenis-icon { background: linear-gradient(135deg, #60a5fa, #3b82f6); }
.pujian .jenis-icon { background: linear-gradient(135deg, #34d399, #10b981); }

.jenis-inner h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.jenis-inner p {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Unit Cards */
.unit-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.unit-card {
    cursor: pointer;
    position: relative;
}

.unit-card.unit-wide {
    grid-column: span 4;
}

.unit-card input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.unit-inner {
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px 10px;
    text-align: center;
    transition: var(--transition);
    background: #fafbfc;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.unit-card:hover .unit-inner {
    border-color: #cbd5e1;
    transform: translateY(-1px);
}

.unit-card input:checked + .unit-inner {
    border-color: var(--primary);
    background: #eff6ff;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.unit-inner i {
    font-size: 1.4rem;
    color: var(--primary-light);
    margin-bottom: 2px;
}

.unit-card input:checked + .unit-inner i {
    color: var(--primary);
}

.unit-inner span {
    font-weight: 700;
    font-size: 0.9rem;
}

.unit-inner small {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* Form Elements */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}

.required {
    color: var(--danger);
}

.optional {
    font-weight: 400;
    color: var(--text-muted);
    font-size: 0.8rem;
}

textarea,
input[type="text"] {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.95rem;
    color: var(--text);
    background: #fafbfc;
    transition: var(--transition);
    resize: vertical;
}

textarea:focus,
input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.char-count {
    text-align: right;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

/* File Upload */
.file-upload {
    position: relative;
    border: 2px dashed var(--border);
    border-radius: var(--radius-sm);
    padding: 28px 16px;
    text-align: center;
    transition: var(--transition);
    background: #fafbfc;
    cursor: pointer;
}

.file-upload:hover,
.file-upload.dragover {
    border-color: var(--accent);
    background: #eff6ff;
}

.file-upload input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.file-upload-content i {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 8px;
    display: block;
}

.file-upload-content p {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.file-upload-content small {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.file-preview {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 8px;
}

.file-preview i {
    font-size: 1.5rem;
    color: var(--success);
}

.file-preview span {
    font-size: 0.9rem;
    font-weight: 500;
    word-break: break-all;
}

.btn-remove-file {
    background: #fee2e2;
    border: none;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    color: var(--danger);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.btn-remove-file:hover {
    background: var(--danger);
    color: #fff;
}

/* Submit Button */
.form-actions {
    margin-top: 8px;
}

.btn-submit {
    width: 100%;
    padding: 16px 24px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border: none;
    border-radius: 14px;
    font-family: inherit;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 8px 24px rgba(30, 58, 95, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-submit:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(30, 58, 95, 0.4);
}

.btn-submit:active:not(:disabled) {
    transform: translateY(0);
}

.btn-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    display: inline-block;
}

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

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    padding: 20px;
}

.modal.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: #fff;
    border-radius: 24px;
    padding: 40px 32px;
    text-align: center;
    max-width: 400px;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.2);
    transform: scale(0.9) translateY(20px);
    transition: var(--transition);
}

.modal.show .modal-content {
    transform: scale(1) translateY(0);
}

.success-icon {
    width: 72px;
    height: 72px;
    background: linear-gradient(135deg, #34d399, #10b981);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2.2rem;
    color: #fff;
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
}

.modal-content h2 {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--text);
}

.modal-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 24px;
    line-height: 1.5;
}

.btn-close-modal {
    background: var(--primary);
    color: #fff;
    border: none;
    padding: 12px 32px;
    border-radius: 12px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-close-modal:hover {
    background: var(--primary-dark);
}

/* Footer */
.footer {
    text-align: center;
    margin-top: 28px;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.footer-note {
    margin-top: 4px;
    font-size: 0.75rem;
    opacity: 0.8;
}

/* Toast Error */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: #1e293b;
    color: #fff;
    padding: 14px 24px;
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    z-index: 2000;
    opacity: 0;
    transition: var(--transition);
    max-width: 90%;
    text-align: center;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.error {
    background: #dc2626;
}

/* Responsive */
@media (max-width: 640px) {
    .container {
        padding: 20px 14px 36px;
    }

    .card {
        padding: 24px 18px;
        border-radius: 20px;
    }

    .header h1 {
        font-size: 1.45rem;
    }

    .logo-icon {
        width: 48px;
        height: 48px;
        font-size: 22px;
    }

    .jenis-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .jenis-inner {
        display: flex;
        align-items: center;
        text-align: left;
        padding: 14px 16px;
        gap: 14px;
    }

    .jenis-icon {
        margin: 0;
        flex-shrink: 0;
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }

    .jenis-inner h3 {
        margin-bottom: 2px;
    }

    .unit-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .unit-card.unit-wide {
        grid-column: span 2;
    }

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

    .steps {
        gap: 0;
    }

    .step-line {
        width: 24px;
        margin: 0 4px;
    }

    .step-label {
        font-size: 0.7rem;
    }
}

@media (max-width: 380px) {
    .unit-grid {
        grid-template-columns: 1fr 1fr;
    }
}