:root {
    --primary-color: #1e3a8a; /* Deep Navy Blue */
    --primary-hover: #1e40af;
    --secondary-color: #3b82f6; /* Bright Blue */
    --success-color: #059669; /* Emerald Green */
    --bg-color: #f1f5f9; /* Slate 100 */
    --card-bg: #ffffff;
    --text-main: #1e293b; /* Slate 800 */
    --text-secondary: #64748b; /* Slate 500 */
    --border-color: #e2e8f0; /* Slate 200 */
    --input-focus: #3b82f6;
    --radius: 1rem;
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    margin: 0;
    padding: 2rem;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: var(--card-bg);
    padding: 3rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

/* Header */
.header-branding {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.logo {
    height: 90px;
    width: auto;
    object-fit: contain;
}

.header-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.institute-name {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.025em;
    line-height: 1.2;
    text-transform: uppercase;
}

.document-title {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

h1 {
    display: none;
}

/* Form Grid */
.form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media (min-width: 768px) {
    .form-grid {
        grid-template-columns: 1fr 1fr;
    }

    .full-width {
        grid-column: span 2;
    }
}

/* Form Elements */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
}

input[type="text"],
input[type="date"],
input[type="number"],
input[type="file"],
textarea,
select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-size: 1rem;
    background-color: #f8fafc;
    transition: all 0.2s ease;
    box-sizing: border-box; /* Important for width: 100% */
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--input-focus);
    background-color: #fff;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

textarea {
    resize: vertical;
    min-height: 120px;
}

.file-input-wrapper {
    background-color: #f8fafc;
    padding: 1.5rem;
    border: 2px dashed var(--border-color);
    border-radius: 0.75rem;
    text-align: center;
    transition: border-color 0.2s;
}

.file-input-wrapper:hover {
    border-color: var(--secondary-color);
}

.file-hint {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Section Dividers */
.section-title {
    grid-column: 1 / -1;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-top: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

/* Readonly fields */
.readonly-field {
    background-color: #f1f5f9 !important;
    cursor: not-allowed;
    color: var(--text-secondary);
}

/* Buttons */
button {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    width: 100%;
    margin-top: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

button:disabled {
    background-color: var(--text-secondary);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Status Messages */
.status-message {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    border: 1px solid transparent;
}

.status-message.success {
    background-color: #dcfce7;
    color: #166534;
    border-color: #bbf7d0;
}

.status-message.error {
    background-color: #fee2e2;
    color: #991b1b;
    border-color: #fecaca;
}

.status-message.info {
    background-color: #e0f2fe;
    color: #0369a1;
    border-color: #bae6fd;
}

/* Final Success Box */
.final-container {
    text-align: center;
    padding: 2rem;
    background: #f0fdf4;
    border: 2px solid #16a34a;
    border-radius: 1rem;
    margin-top: 2rem;
}

.final-container h2 {
    color: #15803d;
    margin-bottom: 1.5rem;
}

.final-container button {
    background-color: #16a34a;
    font-size: 1.25rem;
    margin-top: 0;
}

.final-container button:hover {
    background-color: #15803d;
}