.contact-page {
        padding: 10rem 0 6rem;
    }

    .contact-header {
        text-align: center;
        margin-bottom: 4rem;
    }

    .contact-badge {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        background: rgba(0, 212, 255, 0.1);
        border: 1px solid rgba(0, 212, 255, 0.3);
        border-radius: 50px;
        padding: 0.4rem 1.2rem;
        font-size: 0.8rem;
        font-weight: 600;
        color: #00d4ff;
        letter-spacing: 0.08em;
        text-transform: uppercase;
        margin-bottom: 1.5rem;
    }

    .contact-title {
        font-size: clamp(2rem, 5vw, 3rem);
        font-weight: 700;
        background: linear-gradient(135deg, #ffffff 0%, #00d4ff 50%, #0ea5e9 100%);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        margin-bottom: 1rem;
        line-height: 1.2;
    }

    .contact-subtitle {
        color: rgba(148, 163, 184, 0.9);
        font-size: 1.05rem;
        max-width: 480px;
        margin: 0 auto;
        line-height: 1.7;
    }

    /* Form card */
    .contact-card {
        background: rgba(255, 255, 255, 0.025);
        backdrop-filter: blur(24px);
        border: 1px solid rgba(0, 212, 255, 0.18);
        border-radius: 20px;
        padding: 2.5rem 2.5rem;
        position: relative;
        overflow: hidden;
    }

    .contact-card::before {
        content: '';
        position: absolute;
        top: 0; left: 0;
        right: 0; height: 2px;
        background: linear-gradient(90deg, transparent, #00d4ff, #0ea5e9, transparent);
        opacity: 0.6;
    }

    /* Info sidebar */
    .info-card {
        background: rgba(255, 255, 255, 0.025);
        backdrop-filter: blur(24px);
        border: 1px solid rgba(0, 212, 255, 0.18);
        border-radius: 20px;
        padding: 2.5rem;
        position: relative;
        overflow: hidden;
        height: 100%;
    }

    .info-card::before {
        content: '';
        position: absolute;
        top: 0; left: 0;
        right: 0; height: 2px;
        background: linear-gradient(90deg, transparent, #00d4ff, #0ea5e9, transparent);
        opacity: 0.6;
    }

    .info-title {
        font-size: 1.2rem;
        font-weight: 700;
        color: #f1f5f9;
        margin-bottom: 2rem;
    }

    .info-item {
        display: flex;
        align-items: flex-start;
        gap: 1rem;
        margin-bottom: 1.8rem;
    }

    .info-icon {
        width: 40px;
        height: 40px;
        background: rgba(0, 212, 255, 0.1);
        border: 1px solid rgba(0, 212, 255, 0.25);
        border-radius: 10px;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        color: #00d4ff;
    }

    .info-label {
        font-size: 0.78rem;
        font-weight: 600;
        color: #00d4ff;
        letter-spacing: 0.06em;
        text-transform: uppercase;
        margin-bottom: 0.2rem;
    }

    .info-value {
        color: rgba(148, 163, 184, 0.9);
        font-size: 0.92rem;
        line-height: 1.5;
    }

    .info-value a {
        color: rgba(148, 163, 184, 0.9);
        text-decoration: none;
        transition: color 0.2s;
    }

    .info-value a:hover {
        color: #00d4ff;
    }

    .info-mascot {
        margin-top: auto;
        padding-top: 2rem;
        text-align: center;
    }

    .info-mascot img {
        width: 100px;
        opacity: 0.85;
    }

    /* Form fields */
    .form-label-custom {
        font-size: 0.82rem;
        font-weight: 600;
        color: #94a3b8;
        letter-spacing: 0.05em;
        text-transform: uppercase;
        margin-bottom: 0.5rem;
    }

    .form-control-custom {
        background: rgba(255, 255, 255, 0.04);
        border: 1px solid rgba(0, 212, 255, 0.18);
        border-radius: 10px;
        color: #f1f5f9;
        padding: 0.75rem 1rem;
        font-size: 0.95rem;
        transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
        width: 100%;
    }

    .form-control-custom::placeholder {
        color: rgba(148, 163, 184, 0.4);
    }

    .form-control-custom:focus {
        outline: none;
        border-color: rgba(0, 212, 255, 0.55);
        background: rgba(0, 212, 255, 0.05);
        box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
    }

    textarea.form-control-custom {
        resize: vertical;
        min-height: 140px;
    }

    .form-control-custom.is-invalid {
        border-color: rgba(239, 68, 68, 0.6);
    }

    .invalid-feedback-custom {
        font-size: 0.8rem;
        color: #f87171;
        margin-top: 0.3rem;
    }

    /* Submit button */
    .btn-contact-submit {
        background: linear-gradient(135deg, #00d4ff 0%, #0ea5e9 100%);
        color: #0a0f1e;
        font-weight: 700;
        font-size: 0.95rem;
        border: none;
        border-radius: 10px;
        padding: 0.85rem 2.5rem;
        cursor: pointer;
        transition: opacity 0.2s, transform 0.2s, box-shadow 0.2s;
        letter-spacing: 0.03em;
        width: 100%;
    }

    .btn-contact-submit:hover:not(:disabled) {
        opacity: 0.9;
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(0, 212, 255, 0.3);
    }

    .btn-contact-submit:disabled {
        opacity: 0.6;
        cursor: not-allowed;
    }

    /* Alert */
    .alert-custom {
        border-radius: 12px;
        padding: 1rem 1.25rem;
        font-size: 0.9rem;
        margin-bottom: 1.5rem;
        display: flex;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .alert-success-custom {
        background: rgba(16, 185, 129, 0.1);
        border: 1px solid rgba(16, 185, 129, 0.35);
        color: #6ee7b7;
    }

    .alert-error-custom {
        background: rgba(239, 68, 68, 0.1);
        border: 1px solid rgba(239, 68, 68, 0.35);
        color: #fca5a5;
    }

    /* Subject pills */
    .subject-pills {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        margin-bottom: 0.5rem;
    }

    .subject-pill {
        background: rgba(0, 212, 255, 0.07);
        border: 1px solid rgba(0, 212, 255, 0.22);
        border-radius: 20px;
        padding: 0.35rem 1rem;
        font-size: 0.8rem;
        color: rgba(148, 163, 184, 0.85);
        cursor: pointer;
        transition: background 0.2s, border-color 0.2s, color 0.2s;
        user-select: none;
    }

    .subject-pill:hover,
    .subject-pill.active {
        background: rgba(0, 212, 255, 0.18);
        border-color: rgba(0, 212, 255, 0.5);
        color: #00d4ff;
    }